Unintelligent means exactly what it sounds like it means––not intelligent, not smart. Your unintelligent dog might not know his own name, but you love him for his goofy sweetness anyway.

Don't confuse unintelligent with unintelligible. Unintelligible means something that can't be understood. Some doctors have handwriting so messy as to be considered unintelligible, but that doesn't mean they're unintelligent. If your cell phone signal is weak, you might find that what your mom is telling you on the phone becomes unintelligible to you — but that doesn't make you unintelligent.

Definitions of unintelligent

adj lacking intelligence

“a dull job with lazy and unintelligent co-workers”
lacking or marked by lack of intellectual acuity
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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