baby-brained

Adjective

1. Extremely stupid; dumb, idiotic.

   colloquial, derogatory

   Synonyms: addlebrained addlepated airheaded bee-brained beef-witted soft beefheaded beetle-headed birdbrained blockheaded Boeotian boneheaded boofheaded braindead brainless bubbleheaded buffle-headed bullet-headed cerebrally challenged childish chowderheaded chuckleheaded crackbrained cretinous daft dense dented dim-bulb dim-headed dim-witted dim doltish dopey dozy drowsy dull-headed 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 idiotic ignorant 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 retarded ridiculous rockheaded sharp as a bowling ball sheep-headed silly simple slow slow on the uptake slow-witted smooth-brained stolid stupid 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 champ thick as mince thick as two short planks thick as a whale omelette ass-brained fuckwitted shit-for-brains thick as pig shit

2. Having the mindset or outlook of a baby or toddler; immature, childish, infantile.

   colloquial, slang, figurative