Comprehensive Spell List--I have tried to create a complete list of spells used in the Harry Potter novels (books 1-5)...note: does not include spells from the movies (that's not the point). All spells are listed in alphabetical order with a brief description of what the spell does. Please let me know if I am missing any spells (I'm sure I haven't found them all, but I tried), if I have misspelled any of the words, or if I have decribed any spell incorrectly...thanks! Get out your wand and have fun with these spells (word to the wise...don't attempt any of the Unforgivable Curses...if you know what I mean!).
Accio—a Summoning Charm (brings objects to you)
Alohomora—a spell that unlocks a locked door
Aparecium—a spell to reveal invisible ink
Avada Kadavra—The Killing Curse (an Unforgivable Curse)
Avis—makes birds burst from your wand following a loud blast like a gun
Colloportus--a spell that seals a door shut, perhaps locking it since "Alohomoro" seems effective to undo this spell
Crucio—Cruciatus Curse, torture curse (an Unforgivable Curse)
Deletrius—counter-spell for “Prior Incantato”, stops the spell
Densaugeo—a spell to enlarge teeth
Diffindo—the severing charm (Harry uses it to split Cedric Diggory’s bag open)
Dissendium—opens the hump of a one-eyed witch into a secret passage at Hogwarts
Engorgio—enlarges the item to which this spell is applied
Ennervate—counter-spell for “Stupefy”, wakes up an unconscious person
Evanesco--a vanishing spell
Expecto Patronum—summons a patronus which is a positive force that acts as a shield against a dementor and drives it away
Expelliarmus—The Disarming Charm, knocks your opponent’s wand out of their hand
Ferula—creates bandages out of your wand, for mending injuries (Lupin uses this spell to make a splint for Ron’s broken leg)
Finite Incantatum—stops the action of any current spells in action (can also just say "Finite")
Flagrate--a spell used to leave a mark in the form of a firey "X"
Furnunculus—a spell used to create boils on your victim
Impedimenta—Impediment Curse, slows and stops something advancing on you temporarily
Imperio—Imperius Curse, puts the victim under total control of the attacker (an Unforgivable Curse)
Impervius—a Water-Repelling Spell
Incarcerus--a spell that creates ropes from a wand to bind a victim
Incendio—spell to start a fire
Legilimens--a spell that allows the user to see the thoughts and memories of another
Locomotor--a spell used to move objects, used in a similar fashion as "accio", you say "locomotor" and then the object you wish to move
Locomotor Mortis—Leg-Locker Curse
Lumos—turns a light on at the end of wand
Mobiliarbus—used to move objects around with your wand
Mobilicorpus—used to move an unconscious person
Morsmorde—conjures the appearance of the “Dark Mark” (Voldemort’s calling card, if you will)
Nox—turns off light at the end of wand (counter-spell for “Lumos”)
Obliviate—a Memory Charm (erases memories)
Orchideous—produces a bunch of flowers at the wand tip
Peskipiksi Pesternomi—this spell is supposed to ward off pixies somehow, but the only time we see it used it doesn’t work. I’m not sure if it’s because it’s the wrong spell, or the ding-a-ling who tries to cast it (Lockhart) just doesn’t have enough power to pull it off.
Petrificus Totalus—Full-Body Bind
Point Me—The Four-Point Spell, use this spell while holding a wand flat in your palm and it will point the wand due north, like a compass
Portus--a spell used to turn an object into a Portkey
Prior Incantato—forces the wand this spell is applied on to reveal the last spell it cast
Protego--a sheild spell used to block unfriendly spells and also sends the spells back towards the originator, excellent for defense
Quietus—counter-spell for “Sonorus”, brings voice level back to normal
Reducio—shrinks items back to their original size, a counter-spell for “Engorgio”, this spell may perhaps also be used to shrink things from their original size, but that’s just a guess
Reducto—Blasting Curse, used to blast solid objects aside (also called the Reductor Curse)
Relashio—produces sparks from a wand (or boiling jets of water if you are under water), Harry uses this spell as a defense against a grindylow, but I’m not positive that this spell is necessarily an anti-grindylow defense (probably though)
Reparo—repairs broken items, like glass
Rictusempra—Tickling Charm
Riddikulus—a boggart defense spell (should make you laugh, which drives off the boggart)
Scourgify--a cleaning (scrubbing) spell
Serpensortia—creates a large snake out of your wand
Silencio--a silencing charm (renders the victim mute)
Sonorus—amplifies your voice, like a loud speaker
Stupefy—Stunning Spell (renders your victim unconscious)
Tarantallegra—the Jelly Legs jinx
Waddiwasi—I’m not exactly sure what this spell is suppose to do, but Professor Lupin uses it to force a wad of gum up Peeves’s nose
Wingardium Leviosa—a levitating charm