stupid

daft inept addlebrained addlepated airheaded bee-brained beef-witted beefheaded beetle-headed birdbrained blockheaded Boeotian boneheaded boofheaded braindead brainless bubbleheaded buffle-headed bullet-headed cerebrally challenged childish chowderheaded chuckleheaded crackbrained cretinous dense dented dim-bulb dim-headed dim-witted dim doltish dopey dozy dull-headed drowsy dull-minded dull-witted dull dumber than a box of rocks dumb dunderheaded empty-headed fatheaded feeble-minded flea-brained foolish fuzzy-headed fuzzy-minded goofy half-brained half-witted hammer-headed ignorant idiotic imbecilic inane insipid intellectually challenged knuckleheaded lamebrained lowbrow lumpish lunkheaded mentally challenged mentally retarded mindless monosynaptic moronic muttonheaded nitwitted numbskulled oafish obtuse peabrained pratty pudding-headed puerile purblind quarter-witted ridiculous rockheaded sharp as a bowling ball sheep-headed silly simple slow slow on the uptake slow-witted smooth-brained stolid thick-skulled thickheaded thickwitted thick unapprehensive unclever uninformed unintelligent unsmart vacant vacuous witless wooden-headed wool-headed woolly-headed woolly-minded dumb as a bag of hammers dumb as a box of rocks dumb as a doorknob dumb as an ox dumb as a post dumb as a sack of hammers dumb as dirt dumber than a rock not the sharpest crayon in the box not the sharpest knife in the drawer not the sharpest tool in the shed thick as a brick thick as a plank thick as mince thick as champ thick as two short planks thick as a whale omelette ass-brained

intelligent nonstupid