Synonyms of blockhead

1 Syllable
dolt, chump, bust, schnook, ass, schmuck, clod, fool, fools, schmoes, oaf, schmo
2 Syllables
tomfool, beefhead, meathead, dullard, saphead, dumdums, birdbrains, dimwit, witling, birdbrain, noodle, morons, turkey, mooncalf, muddler, numskull, fumbler, screwball, fathead, halfwit, jerked, bumblers, airhead, thickhead, ninnies, fumblers, dunce, ninny, duffer, idiot, lame-brain, schlemiel, muddlers, softhead, jackass, hardhead, jerking, jughead, dummkopf, ding-dong, half-wit, bunglers, moron, bumbler, bungler, duffers, nitwit
3 Syllables
muttonhead, knucklehead, bonehead, simpleton, dunderhead, nincompoop, addlebrain, featherbrain, clodpate, harebrain
4 Syllables
addlepate, ignoramus, mismanager