Confringo (Blasting Curse)
Pronunciation: con-FRIN-goh (hard "g") or con-FRIN-joh (IPA: /kʌn.ˈfɹɪŋ.gəʊ/ or /kʌn.ˈfɹɪn.dʒəʊ/)
Description: Causes anything that the spell meets to explode.
Seen/Mentioned: Seen only in Deathly Hallows. In the opening chapters, it is cast by Harry to destroy the sidecar of the flying motorbike.[DH Ch.4] Later, it is used by Hermione in an attempt to kill Nagini and facilitate an escape from Bathilda Bagshot's house in Godric's Hollow.[DH Ch.17]
Suggested Etymology: The Latin word confringo which means, "to break in pieces, to bring to naught".[4]
Defodio (Gouging Spell)
Pronunciation: deh-FOH-dee-oh (IPA: dɛ.ˈfəʊ.di.əʊ/)
Seen/Mentioned: Cast by Harry, Ron and Hermione in Deathly Hallows to help dig their way out of the Gringotts Tunnels.[DH Ch.26]
Suggested Etymology: Latin words de meaning "away from" and fodio meaning "to dig out, to excavate". [12]
Episkey
Pronunciation: eh-PIS-key (IPA: /ɛpɪ'ski/)
Description: Used to heal relatively minor injuries. When this spell is cast, the person feels their injured body part go very hot and then very cold.
Seen/Mentioned: Used in Goblet of Fire after the first task of the Triwizard Tournament. In Half-Blood Prince, Nymphadora Tonks uses this spell to fix Harry's broken nose; also used by Harry in the same book to fix Demelza Robins' mouth.
Suggested Etymology: Greek episkeu meaning "repair, restoration".[14]
Notes: Rowling writes in Half-Blood Prince that Harry's knowledge tells him this spell could belong to a family (or variety) of Healing Spells.
(Fiendfyre)
Description: Fiendfyre is a seemingly unstoppable cursed fire, the flames of which take the shape of fantastic creatures that pursue those caught in its path. It is shown to be capable of destroying Horcruxes.
Seen/Mentioned: Appears only once in the series when Draco, Crabbe, and Goyle corner Harry in the Room of Hidden Things (one manifestation of the Room of Requirement). Crabbe casts Fiendfyre, which become flaming beasts that pursue Harry, Ron, and Hermione and devour every object within the Room, including Crabbe and the diadem Horcrux.[DH Ch.31]
Suggested Etymology: English fiend meaning "enemy"[22] and Old English fyr meaning "fire"[23].
Notes: Hermione reveals she was aware that Fiendfyre could potentially destroy a Horcrux but that she never considered using it for that purpose because it was too dangerous to use.
Legilimens (Legilimency Spell)
Pronunciation: Le-JIL-ih-mens (IPA: [lɛ.'dʒɪl.ɪ.ˌmɛnz])
Description: Allows the caster to delve into the mind of the victim, allowing the caster to see the memories, thoughts, and emotions of the victim.
Seen/Mentioned: Used by Snape on Harry during Occlumency lessons in Order of the Phoenix. Also used non-verbally by Snape on Harry in Half-Blood Prince to allow him to see where Harry had learned the Sectumsempra spell.
Suggested Etymology: Latin legere meaning "to read" and Latin mens meaning "mind".[12]
Notes: See also Legilimency for more information.
Sectumsempra
Pronunciation: sec-tum-SEMP-rah [ˌsɛktəm'sɛmpɹa]
Description: Creates terrible wounds to the target, described as being as though the subject had been "slashed by a sword".[26]
Seen/Mentioned: Used by Harry in Half-Blood Prince against Draco, and then later against the Inferi in Voldemort's Horcrux chamber, and Snape during his flight from Hogwarts. In the opening chapters of Deathly Hallows, Snape accidentally casts this curse against George Weasley in the Order's flight from Privet Drive, though George was not his intended target. [DH Ch.3] It is known as a specialty of Snape's. [DH Ch.5]
Suggested Etymology: Latin sectura meaning "cutting" and Latin semper meaning "always".[12]
Notes: Though Snape was able to mend the wounds inflicted on Draco by this curse with ease, with "an incantation that sounded almost like song", Mrs Weasley was unable to heal her son George, when his ear was severed by the curse. It was discovered in an old copy of Advanced Potion Making by Harry; Sectumsempra was invented by Snape with the words "For enemies" written next to it.