A stupid person doesn’t have much intelligence or imagination, and they go through life making decisions that seem to lack all common sense. If you’ve got a brain but you don’t use it, you might be a bit stupid.

The word comes from a Latin adjective that means “amazed or stunned,” and stupid people are stunned by everything because their minds are numb. You can make a stupid mistake when you’re not thinking, and you can call someone stupid if you’re feeling cruel, like “Hey, Stupid.” Zombies are stupid because their brains are dead. If that makes sense to you, then you’re not stupid, and you’re also not a zombie. Well done!

Definitions of stupid

adj lacking or marked by lack of intellectual acuity

anserine, dopey, dopy, foolish, gooselike, goosey, goosy, jerky
having or revealing stupidity
blockheaded, boneheaded, duncical, duncish, fatheaded, loggerheaded, thick, thick-skulled, thickheaded, wooden-headed
(used informally) stupid
cloddish, doltish
heavy and dull and stupid
dense, dim, dull, dumb, obtuse, slow
slow to learn or understand; lacking intellectual acuity
gaumless, gormless
(British informal) lacking intelligence and vitality
lumpen, lumpish, unthinking
mentally sluggish
nitwitted, senseless, soft-witted, witless
(of especially persons) lacking sense or understanding or judgment
deficient in intelligence or mental power
stupid and ignorant like proverbial rural inhabitants
lacking intelligence
showing mental alertness and calculation and resourcefulness
astute, sharp, shrewd
marked by practical hardheaded intelligence
cagey, cagy, canny, clever
showing self-interest and shrewdness in dealing with others
street smart, streetwise, with-it
having the shrewd resourcefulness needed to survive in an urban environment
having the capacity for thought and reason especially to a high degree
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adj lacking intelligence

brainless, headless
not using intelligence
relatively slow in mental or emotional or physical development
having the capacity for thought and reason especially to a high degree
showing mental alertness and calculation and resourcefulness
agile, nimble
mentally quick
apt, clever
mentally quick and resourceful
brainy, brilliant, smart as a whip
having or marked by unusual and impressive intelligence
bright, smart
characterized by quickness and ease in learning
born, innate, natural
being talented through inherited qualities
quick, ready
apprehending and responding with speed and sensitivity
having a keen intellect
brilliantly clever
searching, trenchant
having keenness and forcefulness and penetration in thought, expression, or intellect
characterized by or characteristic of exceptionally early development or maturity (especially in mental aptitude)
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adj in a state of mental numbness especially as resulting from shock

“was stupid from fatigue”
dazed, stunned, stupefied
mentally confused; unable to think with clarity or act intelligently

n a person who is not very bright

“The economy, stupid!”
dolt, dullard, pillock, poor fish, pudden-head, pudding head, stupe, stupid person
a stupid person who is easy to take advantage of
blockhead, bonehead, dumbass, dunce, dunderhead, hammerhead, knucklehead, loggerhead, lunkhead, muttonhead, numskull
a stupid person; these words are used to express a low opinion of someone's intelligence
(Yiddish) a clumsy dolt
Type of:
simple, simpleton
a person lacking intelligence or common sense

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