n. 25B6; noun FOOL, idiot, stupid person, simpleton, ignoramus, dullard; informal dummy, dumbo, clot, thickhead, nitwit, dimwit, halfwit, moron, cretin, imbecile, dope, duffer, booby, chump, numbskull, nincompoop, fathead, airhead, birdbrain, pea-brain, ninny, ass; Brit. informal wally, berk, divvy; N. Amer. informal doofus, goof, schmuck, bozo, lummox; Austral./NZ informal galah.
genius.