70 entries under unintelligent topic. ×

4
idiotic(adjective, dull, simple, slow, silly)
4
ignorant(adjective, dull, simple, slow, silly)
4
thick-headed(dull, witless)
3
imbecile(adjective, dull, simple, silly, foolish)
3
simple-minded(adjective, simple, slow, silly, foolish)
2
dimwitted(adjective, dull, simple, slang, ability)
2
addled(adjective, simple, slow, stupid, sluggish)
2
daft(adjective, simple, slow, stupid, sluggish)
2
deficient(adjective, dull, simple, flat, poor)
2
half-witted(adjective, dull, simple, slow, silly)
2
inane(adjective, dull, simple, slow, silly)
2
nonsensical(dull, ridiculous, absurd, outrageous)
2
senseless(adjective, dull, simple, slow, silly)
2
shallow(adjective, simple, flat, poor, slow)
2
vacuous(adjective, simple, slow, stupid, sluggish)
1
gullible(adjective, dull, simple, slow, silly)
1
half-baked(adjective, dull, simple, slow, foolish)
1
insensate(adjective, dull, simple, slow, silly)
1
laughable(dull, ridiculous, absurd, outrageous)
1
ludicrous(dull, foolish, stupid, absurd, outrageous)
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APASmart Define. (2016). thick thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/thick/thesaurus/synonyms
ChicagoSmart Define. 2016. "thick thesaurus" https://smartdefine.org/thick/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2016, thick thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/thick/thesaurus/synonyms>.
MLASmart Define. "thick thesaurus" 26 February 2016. Web. 28 September 2026. <https://smartdefine.org/thick/thesaurus/synonyms>