It confuses somebody.
The Confundus charm causes confusion in the target, making them less able to think clearly or make sound decisions. It is used to influence someone's judgement or abilities temporarily.
The spell Confoundus is exactly what it sounds like; It's a confounding charm...in other words, in confuses people. Watch the Qudditch Tryouts in Harry Potter and The Half-Blood Princeto watch Hermione (Emma Watson) put the spell into action.
The tickling charm is Rictusempra.
the spell is a charm
Riddikulus
Flagrante
His mother's charm (Which is THE strongest charm) And that trying to kill an innocent kid is, well, illegal.
Professor Flitwick.
The confundus spell confused them. Hermoine once used it on a quidditch player once.
The shield charm protect somone from a spell for a little while
Oblivate is the incantation for a memory charm in Harry Potter. Gilderoy Lockhart didn't invent them or anything, he just happened to be quite good at them.
The charm "obliviate" is used in Harry Potter and the Chamber of Secrets by Proffessor Gilderoy Lockheart to erase Ron and Harry's memory. Unfortunately for him, he used Ron's broken wand and it backfired, erasing his own memory.
Try the summoning charm (accio)