halfwit
Not very bright
A halfwit is a foolish or stupid person—someone operating with only half their wits about them.
The word is an insult but a mild one, suggesting incompetence rather than malice: Some halfwit left the gate open and the dog got out.
Halfwitted is the adjective form.
Stupid person
- dunceSlow-witted person
- simpletonUnintelligent person
- blockheadStupid, foolish person
- boneheadFoolish or stupid person
numbskull · nincompoop · airhead · birdbrain · dullard · ignoramus · lamebrain · knucklehead
Lacking mental acuity
- slowLacking in speed
- simplemindedLacking mental acuity
- obtuseLacking mental sharpness
- denseClosely packed together
thick · dopey · brainless · witless · clueless · vacuous · empty-headed · feebleminded
Lifelike substitute figure
- dingbatDecorative printing symbol
- dipstickFluid level indicator
- goofballAmiable fool
- loonDiving bird or oddball
numpty · schlub · schmuck · pea-brain · chucklehead · fathead · noodle · goof
Absence of knowledge
- foolishnessUnwise conduct
- idiocyExtreme mental deficiency
- inanityPointless, shallow foolishness
- senselessnessAbsence of reason or purpose
absurdity · folly · obtuseness · dullness · fatuity · imbecility · feeblemindedness · witlessness
dolt
Stupid person
bonehead · numbskull · nincompoop · airhead · birdbrain · dullard · ignoramus · lamebrain · knucklehead · doofus
dimwitted
Lacking mental acuity
- slowLacking in speed
- simplemindedLacking mental acuity
- obtuseLacking mental sharpness
dense · thick · dopey · brainless · witless · clueless · vacuous · empty-headed · feebleminded · thick-skulled
dummy
Lifelike substitute figure
loon · numpty · schlub · schmuck · pea-brain · chucklehead · fathead · noodle · goof · boob
ignorance
Absence of knowledge
- foolishnessUnwise conduct
- idiocyExtreme mental deficiency
- inanityPointless, shallow foolishness
senselessness · absurdity · folly · obtuseness · dullness · fatuity · imbecility · feeblemindedness · witlessness · brainlessness
- old insultsknave, varlet, scoundrel, rogue, blackguard
- compound slangairhead, birdbrain, blockhead, bonehead, numbskull
- dimwitsidiot, dolt, dunce, moron, blockhead
- foolishnessfoolishness, silliness, foolish, stupid, folly
- foolsfool, idiot, moron, fools, idiots
- British slangblag, bloke, bodge, blagger, bobby
halfwitgenius
Person of rare brilliance
mastermind · brain · brainiac · intellectual · Einstein