Harry Potter: Spells and Charms (for dorks like me!)

A

Accio (Summoning Charm)
Pronunciation: Various suggestions have been made:
['ɑkkio] (AK-ee-o) - English (film)
['ɑksio] (AK-see-o) - (audiobook)
['æsio] (AH-see-o) - (Scholastic) Latin
Description: This charm summons an object to the caster, potentially over a significant distance. It can be used in two ways: by casting the charm, and then naming the object desired ("Accio Firebolt"), or by pointing the wand at the desired object during or immediately following the incantation to "pull" it toward the user. In either case, the caster must concentrate upon the object they wish to summon in order for the charm to succeed. The caster doesn't necessarily need to know the location if they say the name of the object to be summoned. This is proven when Hermione Granger explains in 1997 that she summoned the Horcrux books from Dumbledore's office by merely saying "Accio Horcrux books!" while in Gryffindor Tower.
Seen/Mentioned: Harry Potter summoned his broom to complete the first task of the Triwizard Tournament in 1994, as well as to summon the Portkey to escape Lord Voldemort and the Death Eaters in the Little Hangleton graveyard in 1995. It failed to summon Horcruxes in 1997, and Harry failed to summon a falling Rubeus Hagrid. It was also used as a quicker way to find objects in Hermione's depth-enlarged beaded handbag, and was used as a quick and effective way of fishing ("Accio salmon").
Notes: The summoning charm is limited only to items and small animals, as it has been shown incapable to summon people. And it is still possible for items to be enchanted so as to be impossible to summon, like Horcruxes and Harry's Cloak of Invisibility.
Etymology: The Latin word accio means "I call" or "I summon".

(Age-Line Spell)
Pronunciation:Unknown
Description: Creates a line that is impassable by people below a set age.
Seen/Mentioned: Used by Albus Dumbledore to stop underage students from entering their names into the Goblet of Fire.
Notes: The Age-Line is impassable even by users of age-potions (proven by Fred and George Weasley). Thus, it functions on either calendar or mental age, not physical age.

Aguamenti
Pronunciation: AH-gwa-MEN-tee
Description: Produces a jet of water from the tip of a wand.
Seen/Mentioned: Used by Fleur Delacour in 1994 to put out her skirt, which had caught fire during her challenge against a dragon. Harry used it twice in 1997: Once in an attempt to give Dumbledore a drink in the Horcrux Cave, and again to douse Hagrid's hut after it was set on fire by a Death Eater.
Etymology: Possibly an extension of Spanish words agua(aqua) ("water") and mente ("mind").

Alerte Ascendare
Pronunciation: A-LEHRT-tey ah-SEN-deh-rey
Description: Shoots an object or creature to the air
Seen/Mentioned: Used by Gilderoy Lockhart at the Dueling Club in the movie version of Harry Potter and the Chamber of Secrets.

Alohomora
Pronunciation: al-lu-ha-MOR-ah or aluh-huh-MORA (video games)
Description: Used to open and unlock doors. It is not effective on doors bewitched to resist this spell. The spell can also unseal doors upon which the Colloportus spell has been cast.
Seen/Mentioned: Used by Hermione Granger in 1991 on the forbidden Third Floor Corridor door at Hogwarts.
Etymology: Alohomora is derived from the West African Sidiki dialect used in geomancy meaning: Friendly to thieves as stated by J.K. Rowling in testimony during the WB and JKR vs. RDR Books. [1]

Anapneo
Pronunciation: ah-NAP-nee-oh
Description: Clears the target's airway, if blocked.
Seen/Mentioned: Professor Slughorn cast this on Marcus Belby when he choked in 1996.
Etymology: From the Greek verb anapneo, "I breathe in". Compare apnea. Anapneo and Episkey are the first spells obviously derived from Greek.

(Anti-Cheating Spell)
Pronunciation:Unknown
Description: Cast on parchment to prevent the writer from cheating while writing answers.
Seen/Mentioned: Near exam times at Hogwarts.

(Anti-Disapparition Jinx)
Pronunciation:Unknown
Description: Used to prevent Disapparition in an area for a time. Presumably can be used to prevent an enemy from entering a defended area, or used to trap an enemy in an area.
Seen/Mentioned: Used by Albus Dumbledore in 1996 during the Death Eater attack on the Department of Mysteries. It is also mentioned that no one can apparate in the Hogwarts premises. It is due to this jinx.

(Antonin Dolohov's Curse)
Pronunciation:unknown
Description: Causes severe internal injury; potentially lethal. The exact effects are unknown, but because of its danger, it is probably a Dark curse.
Seen/Mentioned: Used by Death Eater Antonin Dolohov during the Battle of the Department of Mysteries. He severely injured Hermione Granger with this curse; she was incapacitated instantly and had to take ten potions every day for some time in order to recover.
Notes: This curse is less effective when used nonverbally, but it still causes significant harm, at least when used by an accomplished caster. Also, Hermione had the added benefit of a hastily cast Shield Charm by Harry Potter which may have also lessened the damage caused.(could be the incantation "axelo")

Aparecium
Pronunciation: AH-par-EE-see-um
Description: This spell makes invisible ink, and perhaps invisible items in general, appear.
Seen/Mentioned: First used in 1993, when Hermione Granger tried to make any hidden writing appear in Tom Riddle's diary.
Etymology: Latin apparere, "to appear"; -ium and -cium are common Latin noun endings.
Notes: See also Specialis Revelio.

(Apparition/Disapparition)
Description: Causes the user to magically teleport from one place to another. It is imprecise over long distances. A license is needed to perform on one's own at the age of 17. If done incorrectly, the user can splinch themselves, causing a part of their body to be separated and left behind.
Seen/Mentioned: Used throughout the series. Harry and his classmates took Apparition Class in 1997.
Notes: No incantation, Hand Movement: Turn on the spot while remembering the 3 Ds, which stand for destination, determination and deliberation.

Aqua Eructo
Description: Aqua Eructo is a spell used to create a jet of clear water, and then control it.
Seen/Mentioned: from the Harry Potter and the Goblet of Fire (video game)
Etymology: "Aqua" means, in Latin, "Water". "Eructo" is the verb "I raise". "Aqua Eructo" means, roughly translated: "I Raise Water"

Arania Exumai
Pronunciation: ah-rahn-ee-a eks-su-may
Description: The Spider-killing Curse is a spell used to kill or, at least, blast back Acromantulas or other large spider species.
Seen/Mentioned: Harry uses this in the Forbidden Forest against the attacking Acromantulas in the film version of Harry Potter and the Chamber of Secrets. He learned this from Tom Marvolo Riddle, who attempted to use it against Aragog in the memory Harry visits.
Etymology: From the Latin aranea, meaning “spider”, and exuo, meaning “I lay aside”.

More A's coming Soon

A (Continued)

Aresto Momentum
Pronunciation: ah-REST-oh mo-MEN-tum
Description: Used to slow down an object or being that is moving.
Seen/Mentioned: Used by Dumbledore to save Harry Potter from a fall in the Harry Potter and the Prisoner of Azkaban (film).
Etymology: Likely the combination of two words; the Anglo-French arester, meaning "To bring to a stop", and the Latin Momentum, meaning "The force or strength gained whilst moving." Literal translation: "Bring its momentum to a stop."

Ascendio
Pronunciation: Ah-SEN-DI-oh
Description: Lifts the caster high into the air.
Seen/Mentioned: Used by Harry Potter in the Second Task to lift him to the surface of the water in the movie version of Harry Potter and the Goblet of Fire.
Etymology: Coming from latin ascendo, meaning "to climb".[2]

Avada Kedavra (Killing Curse)
Main article: Unforgivable Curses
Pronunciation: ah-VAH-dah keh-DAV-rah (IPA: /ə.'væ.də kə.'dæv.ɹə/)
Description: Causes a bright green flash and a rushing noise; the curse causes instant death to the victim. There is no known counter-curse or blocking spell (with the exception of the curse striking another spell midflight, negating both), although the caster can be interrupted, the victim can dodge the green jet, hide behind solid objects (which burst into flame when hit by it), or, if the casting wizard is not sufficiently competent, the curse may be completely ineffective as described by Barty Crouch Jr (acting as Alastor Moody) in Goblet of Fire. Harry twice countered this spell by casting Expelliarmus. It is 1 of the 3 Unforgivable Curses; the use of this spell on another human being gives you a one-way ticket to Azkaban.
The magical conditions have also been documented to defeat the curse, even on a direct hit:
Harry Potter was given magical protection against Lord Voldemort's use of the curse, when his mother sacrificed herself to save him.
Harry is the only person in the history of the magical world to have ever survived a direct hit to the killing curse.
Harry is saved by the twin cores effect between his wand and Voldemort's during a duel, as well as during a battle. During this battle, Harry's phoenix feather wand snaps the wand Voldemort borrowed from one of his servants, Lucius Malfoy. The reason for this is unknown. Dumbledore believes this feat to be due to the unique connections and relationships between the two duellists, which are complex and are "realms of magic hitherto unknown".
In Deathly Hallows, Harry is saved twice. The 1st time because when Voldemort tried to kill Harry as a baby, a piece of Voldemort's soul flaked off and was trapped within Harry himself (giving Harry a connection to, and many of the powers of, Voldemort). When the killing curse hit Harry in the Forbidden Forest, it killed the piece of Voldemort's soul trapped in Harry, and sent Harry to a nether region where Voldemort's use of Harry's blood gave Harry a lifeline back to the world of the living, should he choose to use it, and he decided to return to life. The second time, Harry was able to deflect the curse back at Voldemort (who died from it) because of a special condition involving the Elder Wand. This had been 'won' by Draco when he disarmed Dumbledore of his wand, but none understood this at the time, and Draco did not use the Elder Wand. Harry had won Draco's wand in a life-or-death duel, thereby proving to the Elder Wand that Harry should be the wand's true master. Therefore, when Harry used Draco's wand to cast Expelliarmus against Voldemort's Killing Curse, the killing curse rebounded on Voldemort leaving Harry unharmed and killing Voldemort once and for all.
Seen/Mentioned: First said (not by name) at the beginning of the first book when Harry arrives at the Dursley's home. First seen in The Sorcerer's Stone, during the flashback while Hagrid described Harry's parent's deaths,Voldermort is seen killing Lily Evans. Next in Goblet of Fire against Muggle Frank Bryce, and in every book following. It is noted that while Harry has used every other Unforgivable Curse successfully he has never used the Killing Curse.
Suggested Etymology: During an audience interview at the Edinburgh Book Festival (15 April 2004) Rowling said: "Does anyone know where avada kedavra came from? It is an ancient spell in Aramaic, and it is the original of abracadabra, which means 'let the thing be destroyed.' Originally, it was used to cure illness and the 'thing' was the illness, but I decided to make it the 'thing' as in the person standing in front of me. I take a lot of liberties with things like that. I twist them round and make them mine."[3]

Avisfor
Pronunciation: Avy -fors Description: Turns inanimate objects into birds.
Seen/mentioned: The Harry potter video games. Etymology: From Latin "Avis" meaning "bird" and Latin "fors" meaning "for luck"

More soon.

Avis
Pronunciation: AY-vis
Description: A flock of birds comes out of the wand. When coupled with Oppugno, it can be used offensively.
Seen/Mentioned: Used in 1994 by Ollivander to test Viktor Krum's wand. Also employed by Hermione in 1996, along with Oppugno against Ron Weasley.
Etymology: The Latin avis means "bird".

NEXT FOR THE B's! WHOO!!

B

(Babbling Curse)
Pronunciation: Unknown
Description: The Babbling Curse is not fully understood but it is presumed to cause a person to babble whenever they try to speak.
Seen/Mentioned: According to Gilderoy Lockhart, he once cured a Transylvanian villager of this affliction, but as he proved an untrustworthy source of information, it is possible the curse does not exist at all. However, the curse itself may exist, but it could be that someone else cured the said villager.

(Bat-Bogey Hex)
Pronunciation: Unknown
Description: Grotesquely enlarges the target's bogies, gives them wings, and sets them attacking the target.
Seen/Mentioned: Ginny Weasley is a noted practitioner of this hex, and used it on Draco Malfoy to facilitate her, Ron, Luna and Neville’s escape from the Inquisitorial Squad in 1996, and later on Zacharias Smith when he persistently questioned her about what happened during the Battle of the Department of Mysteries.
Notes: This may also be the "Curse of the Bogies" mentioned by Ron in 1991 as a potential punishment should either Hermione or Neville get him and Harry in trouble. However, "bogey" can also mean a monster or a spectre, to which said curse might be referring.

Baubillious
Pronunciation:' baw-BILL-ee-us
Description: Unknown. Creates a bright bolt of white light from the tip of the wand.
Seen/Mentioned: Only in the Harry Potter TCG.
Etymology: From the English, bauble? Etymology unclear.
Notes: Judging by the incantation it is possibly the spell used by Filius Flitwick to decorate the Hogwarts Christmas Tree.

(Bedazzling Hex)
Pronunciation:Unknown
Description: Similar to a Disillusionment Charm, it can be used to conceal a person or an object.
Seen/Mentioned: By Xenophilius Lovegood in 1998 when describing how the cloak of invisiblility is the only thing that can make a person truly invisible, not requiring a Disillusionment Charm or a Bedazzling Hex.
Notes: Is used to make invisiblity cloaks, although those cloaks aren't true cloaks of invisibility. It is not sure what the difference is between a disillusionment charm and a bedazzling hex. A disillusionment charm, would appear to simply make the target blend in very well with the surroundings whereas the bedazzling hex, given its name might possible mess directly with the eyes of anyone looking at the cloak wearer, so they would not appear to be there. Both the word bedazzling (bedazzle means cleverly outwit.) and the hex part of the name suggest this.

(Bluebell Flames)
Description: Creates a quantity of blue flame which can be directed to a specific place such as into a glass jar.
Seen/Mentioned: Hermione cast a bluebell flame that could be carried around in a jam jar, sent out a short distance, then retrieved into the jar; she used it to set Snape's robes on fire during the first Quidditch match of her first year. Hermione also used this spell against Devil's Snare when working through the challenges surrounding the Philosopher's Stone.
Notes: Bluebell flames are waterproof and only heat/burn the intended target.

Bombarda (Blasting Charm)
Pronunciation: bom-bar-dah
Description: Causes a small explosion.
Seen/Mentioned: Hermione used this spell to free Sirius Black from his cage in the film version of Harry Potter and the Prisoner of Azkaban. A stronger version of this spell, Bombarda Maxima, is performed by Dolores Umbridge to force her way into the Room of Requirement in the film version of Harry Potter and the Order of the Phoenix.
Notes: Both the regular and Maxima versions of this spell only appear in the films.

(Brackium Emendo)
Pronunciation: br-ah-kee-um er-men-do
Description: If used correctly, Gilderoy Lockhart claims it will heal a broken bone.
Seen/Mentioned: Used unsuccessfully by Gilderoy Lockhart on Harry Potter in the film version of Harry Potter and the Chamber of Secrets (instead of healing the bone it vanished all the bones in Harry's arm, leaving it not unlike rubber).
Etymology: From the Latin “bracchium”, meaning “forearm”, and “emendo”, meaning “I improve”.

(Bubble-Head Charm)
Pronunciation: Unknown
Description: Puts a large bubble of air around the head of the user. Used as a magical equivalent of a breathing set.
Seen/Mentioned: Cedric Diggory and Fleur Delacour used this underwater in the second task of the Triwizard Tournament in 1995. It was also used by many Hogwarts students when walking through the hallways in 1996, because of the bad smells caused by the various pranks played on Dolores Umbridge.

ON TO C's.

C

Carpe Retractum
Pronunciation: car-pay ruh-track-tum
Description: Produces a magical rope attached to the caster's wand that pulls objects towards the spell caster.
Seen/Mentioned: PoA and GoF Games
Etymology: From the Latin “carpe”, meaning to seize, and “retracto”, meaning “I draw back”.

(Caterwauling Charm)
Pronunciation::Unknown
Description: Anyone entering the perimeter of a Caterwauling Charm sets off a high-pitched shriek.
Seen/Mentioned: Cast by Death Eaters over Hogsmeade to protect against intruders in 1998.
Notes: Could be another form of the Intruder Charm.
Etymology: Caterwaul means to wail like a cat.

(Cave Inimicum)
Pronunciation::Kah-vay ih-nih-mih-kum
Description: Causes the target to become able to change color to match their background, effectively hiding them without making them invisible.
Seen/Mentioned: Alastor Moody used the charm on Harry in 1995. Also mentioned in the Ministry of Magic leaflet provided to all magical people as a precaution against Voldemort's reign of terror. Xenophilius Lovegood mentions, in 1998, that invisibility cloaks are sometimes created by casting a disillusionment charm on a regular cloak, but that such charms will eventually fade and become visible. Is also used by Malfoy, Crabbe and Goyle in the Battle of Hogwarts.
Notes: When Disillusioned, the target feels something cold and wet trickling down their back. Likewise, when the charm is lifted, the target feels something hot trickling down their back.

Cheering Charm
Pronunciation:: chee-e-ro
Description: Causes the person upon whom the spell was cast to become happy and contented, though heavy-handedness with the spell may cause the person to break into an uncontrollable laughing fit.
Seen/Mentioned: First seen in a Charms class in 1994. Cheering Charms were part of the written Charms O.W.L. exam.
Notes: Invented by Felix Summerbee.

Cistem Aperio
Pronunciation:: SIS-tem uh-PE-ree-o
Description: It opens a chest.
Etymology: aperio is Latin for open, uncover, to uncover, lay bare, reveal, or make clear. Cista is Latin for trunk, or chest. If so, however, Cistem is likely a form of bastard Latin. Furthermore, if cista is its root, then it would be pronounced with a hard c (ca)
Seen/Mentioned: It was used by Tom Riddle to open the chest where Aragog was hidden

Colloportus
Pronunciation: cul-loh-POR-tus
Description: This spell will magically lock a door, preventing it from being opened by Muggle means.
Seen/Mentioned: First in 1996 by Hermione in the Department of Mysteries against some Death Eaters.
Etymology: Perhaps a portmanteau of the Latin words colligere ("gather" or "collect") and porta ("gate"). The Greek root kolla also means "glue" and becomes collo- in many English words. Notably, the spell causes a door to seal itself "with an odd squelching noise". It may also be derived from portcullis, which was used in medieval times as a barricade or last line of defence.
Notes: The Death Eaters did succeed in opening a door locked with Colloportus using Alohomora.

(Colour-Change Charm)
Pronunciation::Unknown
Description: Changes an object's colour.
Seen/Mentioned: Used in Harry's Ordinary Wizarding Level examinations in 1996. It may also be the same charm as when Harry accidentally changed the colour of his eyebrow, before he asked Luna to Slughorn's Christmas party. (Unlikely, as that was performed as a Transfiguration exercise, which is rather unrelated to Charms.) Could of possibly been used when Harry accidentally changed the colour of his teachers hair, in his Primary School.

Confringo (Blasting Curse)
Pronunciation: con-FRIN-goh (hard "g") or con-FRIN-joh
Description: Causes anything that the spell comes into contact with to explode into flames.
Seen/Mentioned: Used by Harry to destroy the side-car of the flying motorbike during the battle against the Death Eaters in 1997. Later, Hermione used it in an attempt to kill Nagini and facilitate an escape from Bathilda Bagshot's house in Godric's Hollow.
Etymology: Confringo is Latin for "I break".
Notes: This spell seems to use heat as the source for the explosion. Harry is able to feel the 'heat' of the spell as it passes him when Hermione uses it against Nagini. Noting this, and due to the description of how the side-car exploded, it seems that the Blasting Curse is essentially a magical bomb, while the similar curse Expulso merely blows objects apart without using heat.

Confundo (Confundus Charm)
Pronunciation: con-FUN-doh
Description: Causes the victim to become confused and befuddled.
Seen/Mentioned: First mentioned in 1994, when Severus Snape suggested that Harry and Hermione had been Confunded so that they would believe Sirius Black's claim to innocence. Also used in 1996 by Hermione to prevent Cormac McLaggen from making Gryffindor Keeper over Ron. The Confundus Charm was used multiple times in 1997 including: Severus Snape on Ministry of Magic Official John Dawlish, Harry Potter while under his Cloak of Invisibility on two Gringotts wizard guards who were wielding Probity Probes, and again by Severus Snape on Mundungus Fletcher under orders from Albus Dumbledore. While under the influence of the Confundus Charm, Mundungus then "suggested" to the Order of the Phoenix that they use seven Harrys to confuse Voldemort while they move him from Privet Drive to The Burrow. The Confundus Charm was also used in 2017 by Ron Weasley as the means used to pass his Muggle driving exam.
Etymology: The word "confundus" appears to be derived from the Latin confundere, meaning "to confuse; to perplex", whereas confundo means "I confuse". Similarly, it may also derive from the english word "confound".

(Conjunctivitus Curse)
Pronunciation:: Rup-ti-SPECK-tis
Description: A curse that causes great pain to the victim's eyes.
Seen/Mentioned: It was suggested by Sirius Black in the letter that he sent Harry and used by Viktor Krum in the first task of the Triwizard Tournament in 1994. It was also used by Madame Maxime in 1995 on giants.
Etymology: Presumably, the common name is derived from the Conjunctivitis disease, more commonly known as "pink eye" or "caterpillar eye" due to its scabby inflammation. However, the incantation may come from the Latin words specto meaning "to watch" and the Latin word for "disrupt", in which case, the incantation would mean "disrupt the sight'.

Crucio (Cruciatus Curse)
Main article: Unforgivable Curses
Pronunciation: KROO-shea-oh, KROO-see-oh
Description: Inflicts intense pain on the recipient of the curse. The pain is described as hot knives being driven into you. This curse is affected by the caster's emotions. In an incurable rage, Harry Potter attempts this curse on Bellatrix Lestrange after she murders his Godfather. The curse fails to hurt Bellatrix for long and she mocks him, stating that the caster needed to enjoy the pain inflicted with the Cruciatus Curse. The only time Harry has successfully executed this curse is in the Ravenclaw common room on Amycus Carrow, who had forced Minerva McGonagall to lead him in after he heard that Harry was there. He planned to pass off the assault of his sister, Alecto who Harry had stunned upon entrance, onto the students for an excuse to punish them. When McGonagall objected, he spat in her face. Enraged by his treatment of a teacher he greatly admired, and of the students, Harry burst from the concealment of the Invisibility Cloak and cast a true Cruciatus Curse, knocking the Death Eater out.
Seen/Mentioned:Barty Crouch Jr. who was impersonating the ex-Auror Alastor Moody, used it on a spider during a "class demonstration" in a Defence Against the Dark Arts class.Barty Crouch Jr, Bellatrix Lestrange, Rodolphus Lestrange, and Rabastan Lestrange were sent to the wizard prison, Azkaban, for using the curse to torture Frank and Alice Longbottom, parents of Neville Longbottom, to insanity.
Etymology: Latin crucio, "I torture" (perfect passive participle cruciatus).

D

(Daydream Charm)
Pronunciation::Expecto Fantasium/DiSomnes
Description: Gives the spell caster a highly-realistic 30-minute daydream. Side effects include mild drooling and a vacant expression.
Seen/Mentioned: These were invented by Fred and George Weasley and sold in 1996 at their joke shop, presumably in the form of some kind of physical object, similar to Skiving Snackboxes.
Etymology: Combination of Die, meaning day, and Somnius, meaning dream.

Defodio (Gouging Spell)
Pronunciation: deh-FOH-dee-oh
Description: This spell causes deep gouges to appear in the object targeted by the spell.
Seen/Mentioned: Used by Hermione, Harry, and Ron in 1998 to help tunnel out of the Gringotts Tunnels while on the dragon as well as in their escape from Luna Lovegood's home, also in 1998. Also used by Harry in 1998 to carve the words "Here Lies Dobby, A Free Elf." in Dobby the house elf's grave stone, after the brave elf was stabbed to death by a furious Bellatrix Lestrange.
Etymology: Defodio is Latin for "I dig".

Deletrius
Pronunciation: deh-LEE-tree-us
Description: An erasure spell. It erases images and magical "after-effects".
Seen/Mentioned: First seen in 1994 when Amos Diggory got rid of the echo of the Dark Mark from Harry's wand.
Etymology: Latin delere, meaning "to destroy". A different tense spawns the English word "delete".

Densaugeo
Pronunciation: den-sah-OO-jee-oh
Description: This hex makes the victim's teeth grow rapidly.
Seen/Mentioned: Introduced in 1994 when Draco Malfoy's spell rebounded on Hermione outside of the Potions classroom.
Etymology: From Latin dens, "tooth", and augeo, "I increase" or "I enlarge".

Depulso
Pronunciation::De-pul-soh
Description: The Banishing Charm. Used to send the target to a certain location.
Seen/Method: Learned in the fourth year at Hogwarts.
Etymology: From the Latin “depulsio”, meaning “driving away”. Also is similar to repulse meaning "drive away with force". It could also be seen to be derived from the english word pulse (as in a pulse of energy.) and the prefix "de" which would make it mean "a negative pulse of energy."

Descendo
Pronunciation: deh-SEN-doh
Description: Causes any targeted object to move downwards.
Seen/Mentioned: In 1997, it was used by Ron to magically cause the stairs in his room, which lead to the attic, to descend, as well as by Crabbe in the Room of Requirement to lower the wall behind which Ron was hiding.
Etymology: Descendo is Latin for "I descend".

Deprimo
Pronunciation: DEE-prih-moh.
Description: This spell places immense downward pressure upon its target, which may result in the violent fracturing of said target.
Seen/Mentioned: Introduced in 1998 when Hermione blasted a hole through the living room floor in Xenophilius Lovegood's house.
Etymology: Derived from the Latin deprimo, "I press down".

Diffindo (Severing Charm)
Pronunciation: dih-FIN-doh
Description: Tears the target or a specific area on the target.
Seen/Mentioned: In 1994 when Harry urgently wanted to talk to Cedric Diggory he casted this spell to rip his bag, delaying him for class. Ron also used this spell to trim the lace off his dress robes before the Yule Ball. It was also used in 1996 by Harry to change the covers of his second hand and brand new copies of Advanced Potion Making.
Etymology: Latin diffindere, "to divide" or "to split".

Diminuendo
Pronunciation: dim-in-YEW-en-DOUGH
Desription: Forces objects to shrink
Seen/Mentioned: Performed by Nigel in Harry Potter and the Order of the Phoenix (film)
Etymology: From the Latin word "diminuere", meaning to diminish. Quite posibly the musical term diminuendo, meaning a gradual decrease of loudness.

Dissendium
Pronunciation: dis-EN-dee-um
Description: Causes the statue of the humpbacked witch (Gunhilda Of Gorsemore) hiding the secret passage to Honeydukes to open up.
Seen/Mentioned: First seen in 1993.
Etymology: Quite simply, a phonetic spelling of the English word "descend" with a common Latin noun ending attached (-ium). The name also vaguely suggests "dissident", meaning to be against the laws. It could also come from the Latin word Dissocio, which means to part or to separate (in its verb form). The word en can mean both here and look Dium, could refer to the sun and normally translates as day or, more appropriately, today but can also be used as the command now. Together Dissendium could mean Separate here, now.
Notes: This may not be a spell in the strict sense, but a magical password like "Mimbulus Mimbletonia" (once a password for the Fat Lady) and "Acid Pops" (one of the passwords for Dumbledore's office gargoyle in 1996). However, it is mentioned that Harry has to tap the statue of the crone while saying the spell in order for it to open up. Also, the name of the spell is similar to the way other spells are named, suggesting that it may be a spell in its own right. A more logical explanation would be that it opens secret passages in general, although it is only used on the particular statue in the series, so this is not confirmed, it is just an idea.

Draconifors
Description: Turns statues of dragons into real dragons.
Etymology: From the Latin draco, meaning “dragon”, and fors, meaning “luck”. Questionable incantation.
Seen/Mentioned: PoA Game.

Ducklifors
Description: Transfigures target creature into a duck. A more reasonable incantation would be Zointrao Versavertamum (from zoo (animal-related), intra (within) and oo (egg), plus Versaverte, the transfiguration spell.
Etymology: From the English "duck", and the Latin "fors", meaning "luck". Questionable incantation.
Seen/Mentioned: GoF Game.

Duro
Pronunciation: DOO-roh
Description: This spell is said to turn its target to stone.
Seen/Mentioned: Used by Hermione in 1998 while escaping from Death Eaters in the Battle of Hogwarts.
Etymology: Latin duro, "I make hard", "I stiffen".

E

(Ear to kumquat changing charm)
Pronunciation: Unknown
Description: Changes the victim's ears to kumquats
Seen/Mentioned: In 1995, Luna Lovegood was reading The Quibbler upside down in order to reveal the secret charm, written in Ancient Runes.

Engorgio (Engorgement Charm)
Pronunciation: en-GOR-jee-oh
Description: Causes objects to swell in size.
Seen/Mentioned: Seen in 1994 when Barty Crouch Jr., impersonating Professor Moody, cast it on a spider to enhance a demonstration of the effects of the Cruciatus Curse. Rubeus Hagrid is also suspected of having performed the charm on his pumpkins once, and Ron Weasley suggested it might be the cause of Hagrid's abnormal size before learning that he is half-giant. Also used on a spider by Harry in 1998, partly to test his stolen wand, and partly to annoy Ron.
Etymology: The English word engorged means "distended" or "swollen". Almost certainly the same as the "Growth Charm" which was briefly mentioned in one of the books.
Notes: There is a difference between engorging something and enlarging it. engorgement refers to swelling up, while simple enlargement refers to a scaled (proportionate) increase in size: take note that the pronunciation shares a root with engorgement.

(Entrail-Expelling Curse)
Description: Presumably causes the entrails (i.e. intestines)]] to be ejected from the body.
Seen/Mentioned: First mentioned in Order of the Phoenix when Harry visits St Mungo's following Arthur Weasley's attack by Nagini while guarding the Department of Mysteries.
Suggested Etymology: English word expel meaning "to drive or force out or away".[4]
Notes: The spell is listed under a portrait of Urquhart Rackharrow, 1612-1697, who is known for being the spell's inventor.

First off... Please excuse the language.

HOLY FUCK!!!!!

Haha... That's quite a bit. You are such a geek lil bro. I like that about you. You can really be put into something and keep with it. Very impressive may I say.

((Oh, but I'm far from done, sis! ^.^))

Episkey
Pronunciation: eh-PIS-key
Description: Used to heal relatively minor injuries. Seen/Mentioned: In 1996, Nymphadora Tonks used this spell to fix Harry's broken nose after Draco Malfoy broke it on the Hogwarts Express(used by Luna Lovegood in the film adaptation). Harry Potter used it on Demelza Robins' swollen lip after Ron Weasley accidentally punched her during Quidditch practice.
Etymology: The word comes from the Greek "episkeui" ("επισκευή"), which means "repair". Notes: J. K. Rowling writes in Harry Potter and the Half-Blood Prince that Harry's knowledge tells him this spell could belong to a family (or variety) of Healing Spells, in the same way a species of plants belongs to a larger genus.

Erecto
Pronunciation: ee-RECK-toh, eh-RECK-toh
Description: Used to erect a tent or other structure. Seen/Mentioned: Used by Hermione and Harry to construct shelter for themselves and Ron in 1997.
Etymology: Erectum is past participle of Erigere, Latin for "to erect".

Evanesco (Vanishing Spell)
Pronunciation: ev-an-ES-koh
Description: Makes something vanish. Seen/Mentioned: Used in 1995 by Severus Snape to make Harry's potions disappear from his cauldron. In addition, when Fred and George were showing off their puking pastilles, Lee Jordan cleared the bucket of vomit with the Evanesco spell.
Eytomology: Comes from "evanescence", something that is fleeting or disappears, and the Latin evanesco, "disappear". Notes: In 1998, when asked by the door knocker to Ravenclaw Tower "Where to vanished objects go?", Professor McGonagall replied "Into non-being, which is to say, everything." This is, so far, the best description available for what happens to Vanished objects.

Everte Statum
Pronunciation: ee-VER-tay STAH-tum. Description: Has the same properties of the Hurling Hex. The use of the Latin word 'Everte' backs this up as it basically means 'to throw out'. Also, in its use by Draco Malfoy in the Dueling Club in 1992, the spell throws Harry backwards. Seen/Mentioned: Only seen in Harry Potter and the Chamber of Secrets (film) at the Dueling Club.
Etymology: The Latin word 'Everte' means 'to throw out', and “statua”, meaning “image”, or "statue".

Expecto Patronum (Patronus Charm)
Pronunciation: ecks-PEK-toh pah-TRO-num
Description: The Patronus Charm is a defensive spell used to conjure an incarnation of the Witch's or Wizard's innermost positive emotions to act as a protector. It can also be used to send messages. Seen/Mentioned: First seen in 1993, when Remus Lupin made the Dementor on the train disappear, though seen without the incantation noticed. Lupin later taught Harry Potter to use the charm as a defence against Dementors. According to Fantastic Beasts and Where to Find Them it is the only charm that has any effects on the Lethifold, or Living Shroud. Etymology: Patronus means "protector" or "guardian" in Latin, reflecting the role the Patronus Charm plays. In archaic Latin, it meant "father", which is interesting, considering that Harry Potter's Patronus is the same as his father's Patronus and Animagus form. The Latin word exspecto or expecto means "I watch for" or "I await", thus the charm's incantation roughly translates into "I await a protector".
Notes: All Patronuses take the form something important to the caster, usually some animal special to them. For instance, Harry Potter's Patronus is a stag; Harry's father, James Potter, was an Animagus whose animal form was a stag. The form of one's Patronus can change when the caster has undergone a period of heightened emotion, such as severe stress or love, such as when Nymphadora Tonks' Patronus changed to a werewolf.

Expelliarmus (Disarming Spell)
Pronunciation: ex-pel-ee-AR-mus Description: This spell is used to disarm another wizard, typically by causing the victim's wand to fly out of reach. It can also throw the target backwards when enough power is put into it. As demonstrated in 1994, simultaneous use of this spell by multiple witches or wizards on a single person can throw the wizard back with much greater force. Seen/Mentioned: First seen in 1992, when Professor Snape disarmed Gilderoy Lockhart at the Dueling Club. The most notable uses of it are when Draco Malfoy used it to disarm Albus Dumbledore, and Harry used it in the final battle against Voldemort wielding the Elder Wand. It was seen by the Death Eaters as Harry's signature spell.
Etymology: Possibly a combined form of the Latin expello, "expel", and arma, "weapons" or "tools"; thus, "expel the weapon". Expellamus means "let us expel". Note: Called Harry's "signature move" in 1997, and also used in a Doctor Who episode.

Expellimellius
Description: This spell has only been cast once, and that was by Cho Chang in Harry Potter and the Order of the Phoenix, as an accidental curse used against her friend Marietta. It is possible that this curse can only be cast when the caster is distracted. It manifests as a jet of red light, and cause the targets clothing to spontaneously combust.

Expulso
Pronunciation: ecks-PUL-soh
Description: A very powerful curse which causes a large explosion. Similar to the Blasting Curse, which also causes its target to explode, though the Blasting Curse seems to use heat (like a bomb) while Expulso seems to cause an explosion using pressure as opposed to heat. Seen/Mentioned: Used by the Death Eater Antonin Dolohov in an attempt to capture Harry in 1997; this may have been the spell that caused a segment of wall to fall and kill Fred Weasley.
Etymology: Expulsum is past participle of Expellere, Latin for "to expel".

On to F!!

F

(Featherweight Charm)
Description: Makes something lightweight.
Seen/Mentioned: Harry contemplated using this in 1993 to lighten his trunk so that he could carry it by broom to Gringotts.
Notes: this spell could have been cast in Harry Potter and the Deathly Hallows by Hermione on her beaded bag because she can carry it easily.

Fera Verto
Pronunciation: Fair-uh-VAIR-toh
Description: Turn animals to water goblets.
Seen/Mentioned: Used only once in the series, by Minerva McGonagall in the Harry Potter and the Chamber of Secrets (film) at her Transfiguration class.
Etymology: From Latin fera meaning "beast" or "animal", and verto, meaning “I turn”.

Ferula
Pronunciation: feh-ROO-lah
Description: Creates a bandage and a splint.
Seen/Mentioned: Used by Remus Lupin in 1994 to bind Ron's broken leg.
Etymology: Latin ferula, meaning "walking-stick" or "splint".

(Fidelius Charm)
Pronunciation: fih-DAY-lee-us
Description: This complex charm enables secret information to be hidden within the soul of the recipient, known as a Secret-Keeper. The information is then irretrievable until and unless the Secret-Keeper chooses to reveal it; not even those who have the Secret revealed to them can reveal it to others. If a Secret-Keeper dies, each individual who knew of the secret in turn becomes Secret-Keeper.
Seen/Mentioned: In 1993, it was explained that when Harry was an infant, he and his parents, James and Lily Potter, were hidden from Lord Voldemort using this charm. Later, in 1995, the charm was used to hide the location of the headquarters for the Order of the Phoenix. It was also used in 1998, in which it was used to protect the location of Shell Cottage.
Etymology: Latin fidelis, which means "faithful" or "loyal".
Notes: J. K. Rowling previously stated that when a Secret-Keeper dies, the Secret they held can never be revealed to anyone else; the people who were told before the Secret-Keeper's death will still know the secret, but after the death of the Secret-Keeper no one new can be brought into the circle of knowledge (meaning that eventually all knowledge of the secret will be lost and it will become undiscoverable. However, in 1997, it is clearly explained that upon the Keeper's death (specifically, Dumbledore as Keeper of Number 12, Grimmauld Place), all those who had been told the secret became Secret-Keepers in turn, and could pass the secret on to others. Hermione accidentally "revealed" Grimmauld Place to the Death Eater Yaxley by allowing him to Apparate with her to its front doorstep. Although Yaxley would not be able to reveal the secret to other Death Eaters, he could have brought them inside by the same process. What those other Death Eaters would see and experience upon entering the house in this fashion is not fully explained. It is also not known what would happen if a secret was not passed on to anybody before the death of the Secret Keeper, although the secret information would remain as it was the moment of the Secret Keeper's death.
Notes (2): The Fidelius Charm seems to have no effect with regard to animals, as Hedwig found Ron and Hermione in the headquarters of the Order of the Phoenix in 1995 (unless she was told by Dumbledore somehow). Another oddity is that the Potter's house in Godric's Hollow was apparently visible to all non-Muggles, even though the Secret should have only been known to James, Lily, Harry, Sirius, Peter, Bathilda Bagshot and Voldemort; it apparently ceased to operate upon the Potters' death.
Notes (3): In 1981 Hagrid managed to get Harry before all the Muggles could take a look at the scene. This would mean that after either killing the Potters or the destruction of their House by the Avada Kedavra curse, the spell ceased to function. Later, it would seem that the house was made to be anti-Muggle by wizards in order to pay tribute to the Potters.
Notes (4): In 1997, even though the name of Voldemort had been cursed so act as a sort of beacon as to who spoke the name and as a jinx to disarm all enchantments that it was unable to deactivate the Fidelius charms defenses, however it still may have been a beacon as Death Eaters were staking out the location after Voldemort's name had been spoken within. However it seems as though the Death Eaters were there simply in case Harry showed up as they only stationed 2 Death Eaters in a rotation as though they were staking it out and did not know for sure that Harry, Hermione, and Ron were inside.
Notes (5): Those who have been informed of the secret by the Secret-Keeper are unable to tell the secret to those who are unaware of it. This is proven when Snape told Bellatrix that he couldn't speak the name of 12 Grimmauld Place. Those who do know the secret can apparently discuss it with impunity, though, as Harry and his friends spoke of Grimmauld Place in idle conversation.

Fiendfyre
Pronunciation: Feend-fire
Description: Fiendfyre is seemingly unstoppable cursed fire whose flames take the shape of fantastic creatures that appear to stalk those caught in its path. It can also destroy Horcruxes.
Seen/Mentioned: Used in the Battle of Hogwarts when Crabbe, Goyle, and Draco Malfoy cornered Harry Potter in the Room of Requirement when he was searching for Rowena Ravenclaw's lost diadem. Crabbe cast Fiendfyre, which become flaming beasts that pursued Harry, Ron, and Hermione and gleefully devoured every object within the Room, including Crabbe and the Horcrux within the diadem.
Etymology: A "fiend" is a cruel or wicked person, or a demon; "fyre" is a reference to fire.
Notes: The caster must be able to control Fiendfyre, or it can spread indefinitely. The fire cannot be extinguished by water or fire-stopping charms, and the spell's flames may have some independent consciousness. Hermione Granger notes that she was aware that Fiendfyre was extremely destructive and that it can potentially destroy a Horcrux. However, she never considered using it because it was too dangerous. It is likely that Fiendfyre is too difficult or impossible for most to control.

Finite (Incantatem) (Counter-Spell)
Pronunciation: fi-NEE-tay (in-can-TAH-tem)
Description: Negates spells or the effects of spells.
Seen/Mentioned: Severus Snape used it in 1992 to restore order in the Dueling Club when Harry and Draco were duelling. Remus Lupin used the short form "Finite" in 1995. Harry used Finite to counter Crabbe's Descendo attack on Ron in 1998.
Etymology: Latin finire, "to finish": "finite" is the plural imperative form, so it translates to the command, "[all of you] end". Incantatem is apparently intended to recall "incantation"; the Latin verb form incantatum would mean "someone or something enspelled".

(Flagrante Curse)
Description: Causes any object affected to burn human skin when touched.
Seen/Mentioned: Seen in the Lestranges' vault in 1998, as a criminal deterrent.
Etymology: From the Latin flagro, meaning "to blaze", "to flame" or "to burn". Also, in flagrante delicto means "in the very act of crime".

Flagrate
Pronunciation: fluh-GRAYT, FLAH-grayt, fluh-GRAH-tay
Description: With this spell, the caster's wand can leave fiery marks.
Seen/Mentioned: Two appearances, by Hermione. She used the spell to identify doors of the Department of Mysteries which members of Dumbledore's Army had already opened, by marking an "X" on them. Also used by Tom Riddle in the Chamber of Secrets to draw his name in the air with Harry's Wand.
Etymology: The incantation comes from the Latin noun flagrate, meaning "a burn".

(Flame-Freezing Charm)
Description: Causes fire to become harmless to those caught in it, creating only a gentle, tickling sensation instead of burns.
Seen/Mentioned: Mentioned in 1993 as used by witches and wizards during medieval burnings. Apparently, one witch (Wendelin the Weird) was so fond of the tickling sensation, she allowed herself to be caught and subsequently burned no fewer than 47 times.
Notes: This may have been the spell used by Albus Dumbledore in 1938 to seemingly set fire to Tom Riddle's old wardrobe whilst causing no physical damage. It may also be the protection in the Floo network, as well as how people communicate through fireplaces.
Etymology: from Latin, congelo for to freeze, and incendia for fire.

Flipendo
Pronunciation: FLIP-pen-do
Description: The Knock-Back Jinx, used to push the target. If used repeatedly, it may bring down weaker enemies.
Seen/Mentioned: Used in the Harry Potter and the Philosopher's Stone (video game), Harry Potter and the Chamber of Secrets (video game), and Harry Potter and the Prisoner of Azkaban (video game). One of the starter spells of the game.
Notes: Not used in the books or in the movies.

(Flying Spell)
Description: Apparently the spell cast on broomsticks to make them fly.
Seen/Mentioned: Draco Malfoy mentioned this spell when tauntingly asking Ron Weasley why would anyone cast a Flying Charm on Ron's broomstick, which he deems a "moldy old log", in 1995 during Ron's first Quidditch practice.

Furnunculus
Pronunciation: fer-NUN-kyoo-lus
Description: Causes the target to become covered in painful boils.
Seen/Mentioned: Used by Harry Potter in 1995 on Draco Malfoy, but was deflected onto Goyle instead.
Etymology: Latin furnus, meaning "oven", or Latin furunculus, meaning "petty thief", or English furuncle, an alternative word to "boil".

G

(Garrotting-Gas)
Description: Fred and George Weasley were planning to release some in Hogwarts School of Witchcraft and Wizardry in 1996, during Dolores Umbridge's reign as Headmistress, but they left before they got a chance. Their sister, Ginny Weasley, merely had to mention it to prevent students from traversing down a school corridor, which allowed Harry Potter and Hermione Granger to break into Umbridge's office to use her fireplace for communication.
Etymology: A garrotte is a wirey weapon that can be used to strangle a victim, and also may refer to the action of "ripping through" something.
Notes: It is unknown whether this is a Spell or a Potion.

Geminio
Pronunciation: jeh-MIH-nee-oh, geh-MIH-nee-oh (hard "g")
Description: Creates a duplicate of any object cast upon.
Seen/Mentioned: Used by Hermione in 1997 to copy Salazar Slytherin's locket in order to hide their tracks from Dolores Umbridge was also used on the locket when Sirius's brother Regulus Black stole the locket from Voldemort in the cave. Assumed that it was used on Gryffindor's sword by Snape.
Etymology: Gemini is Latin for "twins".

(Gemino Curse)
Description: Whenever an object affected by this curse is touched, it duplicates itself into many useless copies to hide the original.
Seen/Mentioned: Seen in 1998 when Harry, Ron, Hermione, and Griphook the goblin broke into the Lestrange vault at Gringotts.
Etymology: Possible conflation of the Latin 'Gemini' and the English 'Domino', suggested by the spell's effect of duplicating items ad infinitum.

Glacius
Pronunciation: GLAY-shuss, gla-SI-us
Description: A spell with great range, can freeze things to ice and can be melted by Incendio.
Seen/Mentioned: Used in the video games, used especially in the video game of the Prisoner of Azkaban.
Notes: Never used in the books or in the movies.

Glisseo
Pronunciation: GLISS-ee-oh, gliss-SAY-oh
Description: Causes the steps on a stairway to flatten and form a ramp, slide, or chute.
Seen/Mentioned: Used by Hermione to escape from pursuing Death Eaters in 1998. It is possible that the spell on the stairs to the girl's dormitories, which activates when boys try to climb the stairs, is the same .
Etymology: Possibly derived from the French verb glisser, meaning "to slide".

(Gripping Charm)
Description: Used to help someone grip something with more effectiveness. This charm is placed upon Quaffles to help Chasers carry the Quaffle whilst simultaneously holding their brooms.
Seen/Mentioned: Mentioned in Quidditch Through the Ages.

((I had to redo this post... Made me mad.))

H

(Hair Loss Curse)
Description: Probably causes loss of one's hair.
Seen/Mentioned: In Philosopher's Stone, Harry visits the "Curses and Counter-Curses" shop in Diagon Alley, on the sign it mentioned 3 curses; Hair loss, Jelly-Legs and Tongue-Tying.

(Hair-thickening Charm)
Description: Thickens one's hair.
Seen/Mentioned: In 1996, Severus Snape asserted that Alicia Spinnet used it on her eyebrows even though she was obviously hexed by someone on the Slytherin Quidditch team.

Harmonia Nectare Passus
Pronunciation: Harm-oh-nee-a Nek-te-reh Pass-us
Description: Causes the object/person in a vanishing cabinet to pass in its twin/other vanishing cabinet.
Seen/Mentioned: Used by Draco Malfoy in the room of requierment, when testing the Vanishing Cabinet he was mending in the movie version of Harry Potter and the Half-Blood Prince.

(Healing Spell)
Incantation: Vulnera Sannelto (film only)
Description: Spell used to heal deep gashes. Its incantation is described as being song-like.
Seen/mentioned: In 1998, Severus Snape used it to heal Draco Malfoy's wounds from Sectumsempra. Dumbledore also used it to heal himself when giving Voldemort's Horcrux cave its "tribute". Harry Potter noted in 1997 that he never learned to use such a spell and that he regretted his neglect in this area, although Hermione Granger showed at least some knowledge in the area.

Herbivicus
Pronouciation: HER-bee-vee-kus
Description: Makes flowers and plants bloom in an instant, has some similar affects from Orchideous.
Seen/Mentioned: Used in the Goblet of Fire video game.
Notes: Not used in the books or the movies

(Hermione Granger's jinx)
Description: Causes a traitor to break out in boils spelling "SNEAK" on his or her forehead.
Seen/Mentioned: Hermione Granger designed and placed this jinx on the parchment signed by all members of Dumbledore's Army. When Marietta Edgecombe betrayed the D.A. to Dolores Umbridge, the jinx was triggered.
Notes: This jinx was invented by Hermione, and may have been inspired by Furnunculus.

Homenum Revelio
Pronunciation: HOM-eh-num reh-VEH-lee-oh
Description: Reveals human presence in the vicinity of the caster.
Seen/Mentioned: Used multiple times by various people in 1997.
Etymology: Most likely from Latin homo, meaning human, and "reveal", though the classical Latin form would be hominem instead of homenum, which shows Portuguese influence ("man" is homem in Portuguese)—indeed, Rowling speaks the language.
Notes: It can be used non-verbally; Dumbledore does so to detect Harry underneath his Invisibility Cloak.[7]

(Homorphus Charm)
Description: Causes an Animagus or transfigured object to assume its normal shape.
Seen/Mentioned: According to Lockhart, he used it to force the Wagga Wagga Werewolf Werewolf to take its human form. It was, however, used by Lupin and Sirius on the rat named Scabbers to reveal that he was Peter Pettigrew in Prisoner of Azkaban.
Suggested Etymology: Latin homo meaning "person" and Greek morphosis meaning "shaping"

(Horton-Keitch Braking Charm)
Description: This spell was first used on the Comet 140 to prevent players from overshooting the goal posts and from flying off-sides.
Seen/Mentioned: Mentioned in Quidditch Through the Ages as the charm that gave the Comet 140 an advantage over the Cleansweep.

(Horcrux Curse)
Description: This spell allows a part of a wizard's soul to pass into an object, thereby making the object a Horcrux. One has to commit murder and take advantage of the soul's "splitting apart" by this supreme act of evil in order to be able to perform this spell, and it is probably very complex. In 1943, Horace Slughorn described the spell to a young Tom Riddle as encasing a portion of the torn soul and placing it within an object. The spell itself is described in detail in a library book known as "Secret of the Darkest Art", which Hermione Granger summoned from Albus Dumbledore's office near the end of their sixth year. According to the text, use of this spell to separate the soul will make the remaining portion of the soul very fragile, and can only be reversed by "remorse" of the wrongs the creator had made; however, the pain caused by attempting to reverse the creation of a Horcrux can destroy the individual.
Seen/Mentioned: Used by Lord Voldemort while creating his Horcruxes.
Notes: When J.K.Rowling was asked about what the steps are to create a Horcrux Rowling declined to answer, saying that "some things are better left unsaid".

(Hot-Air Charm)
Description: Causes wand to emit hot air.
Seen/Mentioned: Used by Hermione Granger in 1995 to dry off her robes. Also used shortly after to melt snow. Also was used by Albus Dumbledore in 1997 to dry Harry's and his own robes.

(Hover Charm)
Description: An object is levitated off the ground and moved according to the caster.
Seen/Mentioned: Used by Dobby in Chamber of Secrets to which Harry is accused of using. Also used by Xenophilius to clear rubble off his stairs in Deathly Hallows.

(Hurling Hex)
Description: Causes brooms to vibrate violently in the air and try to buck their rider off.
Seen/Mentioned: In 1991, Professor Quirrell may have been casting a wordless and wandless version of this spell on Harry's broom during his Quidditch match. Professor Flitwick suggested that Harry's confiscated Firebolt may be jinxed with this spell.