1. (a.) Very dull; insensible; senseless; wanting in understanding; heavy; sluggish; in a state of stupor; -- said of persons.

2. (a.) Resulting from, or evincing, stupidity; formed without skill or genius; dull; heavy; -- said of things.

Boeotian absurd addled apish asinine backward balmy barmy batty beef-brained beef-witted beetleheaded befooled beguiled besotted blear-eyed blear-witted block blockheaded blockish boneheaded bootless boring bovine brainless brute brutish buffoonish chuckleheaded chumpish clod cloddish cockamamie cockeyed cowish crass crazy credulous cretinous cuckoo daffy daft dazed dense dim dim-witted dimwit dizzy dolt doltish donkey dope dopey doting dozy dull dull-witted dullard dullhead dumb dumb cluck dumbbell dummkopf dummy dunce duncical duncish empty-headed fat fatheaded fatuitous fatuous flaky fond fool foolhardy foolheaded foolish frivolous fuddled futile gaga goofy goosey gowk gross gulled half-assed half-baked half-witted ho-hum humdrum idiot idiotic ignoramus ill-advised imbecile imbecilic inane ineducable inept infatuated insane insipid irrational irresponsible jerky jobbernowl klutzy kooky lackwit lamebrain laughable lightweight looby loon loony ludicrous lumbering lumpish mad maudlin mindless monotonous moron moronic niais nincompoop ninny ninnyhammer nitwit noddy nonsensical numskulled nutty oafish obtuse opaque pinhead prosaic put retarded ridiculous risible sappy scatterbrained screwy senseless sentimental silly simple simpleton slow slow-witted sluggish sottish stolid subnormal tedious thick thick-witted thickheaded thickwit thoughtless tiresome torpid unimaginative uninspired unintelligent uninteresting unteachable vacuous vapid wacky weak-minded wet witless witling wrongheaded