These words all describe somebody/something that makes you laugh or smile.
funny that makes you laugh: a funny story; He was a very funny guy. amusing funny and enjoyable: It’s a very amusing game to play. entertaining amusing and interesting: It was a very entertaining evening. witty clever and amusing; able to say or write clever and amusing things: a witty remark; a witty public speaker humorous funny and entertaining; showing a sense of humour: a humorous look at the world of fashion comic that makes you laugh: Many of the scenes in the book are richly comic. hilarious extremely funny
FUNNY, AMUSING, HUMOROUS OR COMIC? Amusing is the most general of these words because it includes the idea of being enjoyable as well as making people laugh and can be used to describe events, activities and occasions: an amusing party/game/evening Humorous is not quite as strong as funny or comic and is more about showing that you see the humour in a situation, than actually making people laugh out loud. Comic is used to talk especially about writing and drama or things that are funny in a deliberate and theatrical way. It is not used to describe people (except for comic writers). Funny can describe people, jokes and stories, things that happen, or anything that makes people laugh.
PATTERNS AND COLLOCATIONS • to be funny/amusing/entertaining/witty/humorous/ comic/hilarious • to find something funny/amusing/entertaining/witty/ humorous/comic/hilarious • very/quite funny/amusing/entertaining/witty/ humorous/comic • really funny/amusing/entertaining/witty/humorous/ comic/hilarious • extremely funny/amusing/entertaining/witty/ humorous/comic