Reducto- Reductor Curse, reduces solid objects.
Relashio- Shoots sparks from the enbd of your wand, or jet of boiling water if underwater. Effective for repelling grindylows.
Reparo- Repairing Charm, used to repair broken objects.
Rictusempra- Tickling Charm.
Riddikulus- Boggart repelling spell. Used to make you laugh and defeat a boggart.
Scourgify- Cleaning spell. Removes grime and such from you and objects.
Serpensortia- Summons a large snake from the tip of your wand (I'm pretty sure it was a cobra in the movie)
Silencio- Silencing Charm, makes it so the victim is mute with a jabbing motion of your wand.
Sonorus- Magically amplifies your voice (Counter with Quietus)
Stupefy- Stunning Spell, makes your victim unconcious. (Counter with Enneverate)
Tarantallegra- Jelly Legs Jinx.
Waddiwasi- Lupin used it to remove a wad of gum from a door and it projected into Peeves eye.
Wingardium Leviosa- Levitating Charm. Levitates an object wtih a swish and flick of your wand.