THESAURUS
Boeotian, block, clod, cluck, dimwit, dolt, donkey, dope, dullard, dumb cluck, dumbbell, dummy, dunce, featherweight, gowk, jobbernowl, lackwit, lamebrain, lightweight, looby, loon, niais, nincompoop, ninny, ninnyhammer, noddy, pinhead, put, simp, stupid, thickwit, witling