In the fictional universe of the Harry Potter series of books by author JK Rowling, magic
spells are used by many of the characters to achieve useful effects without the benefit of modern technology. The main depiction of a "spell" in the Harry Potter books consists of a gesture made with the character''s wand, combined with a spoken or mental incantation. In the books and their associated film series, the majority of these incantations are derived from the Classical languages, particularly Latin<1>. These named incantations are not grammatically correct in any
language; most spoken phrases resemble Latin words of appropriate meaning, but are not exactly Latin themselves.In Harry Potter and the Half-Blood Prince, the concept of casting spells non-verbally is introduced. Prior to this, every spell cast by the principal characters had been accompanied by the appropriate incantation (although advanced adult practitioners of magic had been described casting non-verbal spells in previous books). Consequently, the incantations used for some spells introduced in Half-Blood Prince and its sequel Harry Potter and the Deathly Hallows are not known canonically.Spells are listed here by their incantation (when known), with their vernacular name in parentheses. Some spells have no known incantation – the only canonical reference is by an informal name, either because in its only appearance in the relevant book it was cast non-verbally, or because it was never depicted in the books, only talked about. The majority of spells cast in duels between adult characters in all seven books appear non-verbally; such spells can only be identified by their effects.Accio (Summoning Charm) Pronunciation: Various suggestions have been made <''ɑkkio> (AK-ee-o) - classical Latin (film) <''ɑksio> (AK-see-o) - (audiobook) <''æsio> (AH-see-o) - (Scholastic) English Description: This charm summons an object to the caster, potentially over a significant distance<2>. Seen/Mentioned: First mentioned in Harry Potter and the Goblet of Fire, Harry summons his broom to complete the First Task of the Triwizard TournamentGF Ch.20. Later in the same book Harry summons a Portkey he can''t reach to escape from the Battle in the Graveyard. Also seen in Harry Potter and the Half-Blood Prince and Harry Potter and the Deathly Hallows to try to summon Horcruxes, and Harry even tries to summon a falling Hagrid, and later, his glasses, to comical effectsDH Ch.4. Suggested Etymology: The Latin word accio means "I call" or "I summon".<3>
(Age-Line Spell) Pronunciation: Unknown Description: Creates a line that is impassable by people below a set age. Seen/Mentioned: Seen only in Harry Potter and the Goblet of Fire, Albus Dumbledore cast this spell to stop underage students from placing their names into the Goblet of FireGF Ch.16. Aguamenti Pronunciation: AH-gwa-MEN-tee or AG-YOO-A-menti (IPA: /a.gwə.''mɛn.ti/) Description: Produces a jet of water from the witch or wizard''s wand. Seen/Mentioned: First named in Harry Potter and the Half-Blood Prince, Harry casts this spell in an attempt to create a drink of water for Dumbledore after drinking Voldemort''s potionHBP Ch.26, and later to douse Hagrid''s hut after it is set on fireHBP Ch.28. Hermione uses it in Harry Potter and the Deathly Hallows to put out Mundungus''s searing eyebrows. Shown again in the same book in an attempt to douse Vincent Crabbe''s Fiendfyre curse. Alohomora Pronunciation: AL-lo-ha-MOR-ah (IPA: /ə''lo.həˌmo.ɹə/) Description: Used to open and unlock doors<4>. It is not effective on doors bewitched to resist this spell. roughout the series, first shown used by Hermione Granger in Harry Potter and the Philosopher''s Stone on the third floor corridor door in HogwartsPS Ch.9. Anapneo Pronunciation: ah-NAP-nee-oh (IPA: /ə.''næp.ni.əʊ/) Description: Clears the target''s airway, if blocked. Seen/Mentioned:Shown in Harry Potter and the Half-Blood Prince, Horace Slughorn casts this spell on Marcus Belby when the latter begins to chokeHBP Ch.7. (Anti-Cheating Spell) Pronunciation: Unknown Description: Cast on parchment to prevent the writer from cheating while writing answers. Seen/Mentioned: Mentioned in Harry Potter and the Philosopher''s Stone and Harry Potter and the Order of the Phoenix as being cast on quills and exam papers near exam times at HogwartsPS Ch.16. (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: Mentioned in Harry Potter and the Order of the Phoenix, used by Albus Dumbledore to trap several Death Eaters in the Department of MysteriesOP Ch.36. Also cast long ago on Hogwarts, the reason why (As Hermione quotes innumerable times throughout the series) "No one can apparate or disapparate inside the grounds." (Antonin Dolohov''s Curse) Pronunciation: Unknown Description: This curse causes serious internal injury, but does not show any external symptoms. It is described as cast with "a slashing motion", sending out a streak of purple flames. Seen/Mentioned: Seen only in Harry Potter and the Order of the Phoenix, this spell is cast three times by Antonin Dolohov during the battle between the Death Eaters and members of Dumbledore''s Army at the Ministry of Magic. All three times it is shown cast non-verbally, although one time this was due to Dolohov having previously been hit by the Silencing Charm and hence unable to speak. Notes: It is revealed that this curse is less effective than it would have been had Dolohov was able to say the incantation aloud. Aparecium Pronunciation: AH-par-EE-see-um (IPA: /æ.pə''ɹi.si.ʌm/) Description: This spell makes invisible ink appear. Seen/Mentioned: First seen in Harry Potter and the Chamber of Secrets, when Hermione Granger tries to make hidden writing appear in Tom Marvolo Riddle''s diaryCS Ch.13. Notes: See also Specialis Revelio. (Atmospheric Charm) Pronunciation: Unknown Description: Modifies or affects the weather. Seen/Mentioned: Mentioned only in Harry Potter and the Deathly Hallows as a possible cause of the rain inside Yaxley''s office at the Ministry. Avada Kedavra (Killing Curse) Main article: Unforgivable Curses Pronunciation: uh-VAH-dah kuh-DAHV-rah (IPA: /ə.''væ.də kə.''dæv.ɹə/) Description: One of the three "Unforgivable Curses". Causes instant, painless death, and leaves no physical signs of cause of death. There is no described counter-curse or blocking spell, but it is shown that the spell can be blocked by physical coverOP Ch.36, and the caster is still required to aim to hit the target. Described effects include a flash of green lightGF Ch.14 and a rushing sound, similar to an oncoming high-speed objectGF Ch.1. Harry blocks this spell several times using Expelliarmus, this suggests that the spell can be intercepted. Seen/Mentioned: Throughout the series. This was the spell described as used to kill Harry Potter''s parents. Lord Voldemort is shown to kill many people with this curse.  
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