ass - a pompous fool

buffoon, clown - a rude or vulgar fool

flibbertigibbet, foolish woman - a female fool

fucker - a stupid despised man

bozo, cuckoo, fathead, goof, goofball, jackass, twat, zany, goose - a man who is a stupid incompetent fool

meshuggeneh, meshuggener - (Yiddish) a crazy fool

morosoph - a learned fool

putz - (Yiddish) a fool; an idiot

simpleton, simple - a person lacking intelligence or common sense

Wally - a silly and inept person; someone who is regarded as stupid