I. adjective
1.
lacking in or exhibiting a lack of power to absorb ideas or impressions
a willing boy but too stupid to succeed in school
Synonyms: beefheaded, beef-witted, beetleheaded, blear-eyed, blear-witted, blockheaded, blockish, chuckleheaded, dense, doltish, dull, dumb, duncical, fatheaded, goosey, hammerheaded, numskulled, pinhead, pinheaded, thick, thickheaded, thick-witted; compare retarded , simple 3
Related Word: asinine, fatuous, foolish, silly, simple; brute, brutish, dummel, lumbering, oafish, slow, slow-witted, sluggish; ||half-assed; crass; backward, half-witted, retarded; idiotic, imbecilic
Idioms: ||dead above ( or between) the ears, ||dead from the neck up, having a block for a head, having cotton between the ears, ||muscle-bound between the ears
Contrasted words: acute, alert, bright, clever, keen, knowing, quick, quick-witted, sharp, smart; sage, wise; brilliant; able, competent
Antonyms: intelligent
2.
Synonyms: lethargic , comatose, dopey, heavy, hebetudinous, sluggish, slumberous, torpid
II. noun
Synonyms: dunce , dullard, dullhead, dumbbell, ||dummkopf, dummy, idiot, ignoramus, moron, simpleton