The Unofficial Harry Potter Spell List

Accio: summons objects
Alohomora: opens locks
Aparecium: used to reveal invisible ink
Avada Kedavra: killing curse
Avis: To make birds fly out of your wand
Colloportus: sealing spell which seals anything (particularily doors)
Crucio: torture curse
Delertius: vanishes something
Densaugeo: makes someone's teeth grow very fast
Diffindo: makes something split
Dissendium: To open the hump on the witch's back
Engorgio: enlarges something
Ennervate: revives someone after being stunned
Evanesco: vanishing charm
Expecto Patronum: called 'patronus' repels dementors
Expelliarmus: disarms
Ferula: makes a splint
Finite Incantatem: stops spells
Flagrate: marking spell
Furnunculus: make other peoples skin boil
Impedimenta: slows something down
Imperio: makes you be able to control somebody
Impervius: makes something repel water
Incendio: starts a fire
Morsmorde conjures the Dark Mark
Legilimens: memory spell that allows the caster access to the victim's memories
Locomotor Mortis: binds someone's legs together
Lumos: makes light
Mobilarbus: a hover charm
Mobilicorpus: makes invisible strings tie someone up
Morsmordre: To summon the Dark Mark
Nox: disables Lumos
Obliviate: makes whoever you cast the spell on lose his/her/its memory
Orchideous: makes flowers come out of a wand
Petrificus Totalus: fully binds someone's body
Point Me: Points your wand north
Portus: creates Portkeys
Priori Incanto: shows the prior spells done by the wand
Protego: shielding charm
Quietus: disables Sonorus
Reducio: the opposite of Engorgio
Reducto: blasts solid objects away
Relashio: scares away grindylows
Reparo: repairs objects
Rictusempra: a tickling curse, used in the dueling club in book 2
Riddikulus: Boggart spell, used to help make it look funny
Scourgify: cleaning spell
Serpensortia: summons a snake
Silencio: silencing spell
Sonorus: magnifies one's voice
Stupefy: stuns
Tarantallegra: makes something dance
Waddiwasi: used to unclog holes
Wingardium Leviosa: enables objects to fly


Movie/Video Game Spells

Flipendo: knocks someone back
Ferreverto: turns animal into water goblet
Oculus Reparo: repares broken things
Lumos Honem: generates light
Immobulus: immobolizes(freezes) moving objects
Arinea Rximae: repels objects
Braciunt Mende: makes bones dissappear
Lacarnum Inflamare: makes fire
Felite Incantatem: blows things up
Iverte Statis: flips objects(Malfoy used it on Harry in CoS)
Abbifords: transfigures stone into life
Serpent Sortia: shoots a snake out of the end of the caster's wand