Englishimbecile informal
noun
I'd have to be an imbecile to do such a thing:
fool, idiot, cretin, moron, dolt, halfwit, dunce, dullard, simpleton, nincompoop, blockhead, ignoramus, clod;
informal dope, thickhead, ninny, chump, dimwit, dummy, dum-dum, dumb-bell, jackass, bonehead, fathead, numbskull, dunderhead, airhead, pinhead, lamebrain, pea-brain, birdbrain, dipstick, donkey, noodle;
British, informal nit, nitwit, twit, numpty, ass, clot, muppet, plonker, berk, prat, pillock, wally, wazzock, divvy;
North American, informal bozo, turkey, goofus, dumbhead, dumbass.
▷antonyms genius.
adjective
try not to make imbecile remarks:
stupid, foolish, idiotic, silly, doltish, half-witted, witless, dull, brainless, mindless, unintelligent, unwise;
senseless, absurd, crazy, mad, fatuous, inane, asinine, ridiculous;
informal dense, dumb, thickheaded, dim, dim-witted, dopey, half-baked, hare-brained, crackbrained, pea-brained, nutty, dippy, cuckoo, screwy, wacky;
British, informal barmy, daft, dotty, batty, gormless.
▷antonyms intelligent.
imbecile Oxford Dictionary of English