C

Cheering Charm
Causes subject to be cheerful.

Colloportus
kohl-o-POR-tus
Seals the subject door.

Confundus
kuhn-FUHN-dus
Confundus Curse
Confuses the subject to a sometimes extreme degree.

Conjunctivitis Curse
Hurts the subject's eyes.

Cruciatus Curse
Crucio
KROO-see-o
NOTE: The usage of this curse is not recommended, as you will likely go to Azkaban for it.

Curse of the Bogies
Gives the subject excessive bogies.

Cushioning Charm
Creates an invisible "cushion" on a broomstick to make it much more comfortable.