addlebrain addlehead addlepate beefhead blockhead blubberhead blunderhead bonehead bufflehead cabbagehead chowderhead chucklehead clodhead clodpate clodpoll dabbler dilettante dolthead dullhead dumbhead dunce dunderhead dunderpate fathead fool greenhorn greeny ignoramus illiterate illiterati jolterhead jughead know-nothing knucklehead lowbrow lunkhead meathead middlebrow muddlehead mushhead muttonhead no scholar noodlehead numskull peabrain pinbrain pinhead pumpkin head puzzlehead stupidhead tenderfoot thickhead thickskull tottyhead unintelligentsia