stupid

nouns

a person who is not very bright
"The economy, stupid!"

adjectives

lacking or marked by lack of intellectual acuity
is derived from
antonym
is similar to
having or revealing stupidity
"ridiculous anserine behavior"; "a dopey answer"; "a dopey kid"; "some fool idea about rewriting authors' books"
is similar to
heavy and dull and stupid
is similar to
slow to learn or understand; lacking intellectual acuity
"so dense he never understands anything I say to him"; "never met anyone quite so dim"; "although dull at classical learning, at mathematics he was uncommonly quick"- Thackeray; "dumb officials make some really dumb decisions"; "he was either normally stupid or being deliberately obtuse"; "worked with the slow students"
is similar to
(British informal) lacking intelligence and vitality
is similar to
mentally sluggish
is similar to
(of especially persons) lacking sense or understanding or judgment
is similar to
deficient in intelligence or mental power
"a weak mind"
is similar to
stupid and ignorant like proverbial rural inhabitants
"the boy's empty yokel-like expression"
see also
lacking intelligence
"a dull job with lazy and unintelligent co-workers"
in a state of mental numbness especially as resulting from shock
"he had a dazed expression on his face"; "lay semiconscious, stunned (or stupefied) by the blow"; "was stupid from fatigue"
lacking intelligence
"a dull job with lazy and unintelligent co-workers"
is derived from