[n] a man who is a stupid fool
[n] a buffoon in one of the old comedies; imitates others for ludicrous effect
[adj] like a clown; "a buffoonish walk"; "a clownish face"; "a zany sense of humor"
[adj] (informal terms) "gave me a cockamamie reason for not going"; "wore a goofy hat"; "a silly idea"; "some wacky plan for selling more books"
bozo, buffoonish, clowlike, clownish, cockamamie, cockamamy, cuckoo, fathead, fool(a), foolish, goof, goofy, goose, humorous, humourous, jackass, sappy, silly, twat, unreasonable, wacky, whacky