78 entries under unintelligent topic. ×

9
harebrained(adjective, weak, simple, knowledge, ability)
9
vacuous(adjective, careless, indifferent, silly, stupid)
8
lunatic(adjective, weak, simple, knowledge, ability)
8
shallow(adjective, dull, slight, silly, stupid)
7
kooky(adjective, weak, simple, wrong, wild)
7
meaningless(adjective, dull, simple, slight, slow)
7
thick(adjective, dull, simple, slow, silly)
7
trivial(adjective, dull, simple, slight, offensive)
6
cockamamy(adjective, silly, thoughtless, nonsensical)
6
insensate(adjective, dull, simple, ability, slow)
6
obtuse(adjective, dull, simple, careless, silly)
5
dense(adjective, dull, simple, slow, silly)
5
pointless(adjective, dull, simple, slow, silly)
5
simple-minded(adjective, silly, stupid, green, fat)
5
stolid(dull, witless)
4
boneheaded(silly, impulsive, impractical, unaware)
4
shortsighted(adjective, dull, witless, unmindful)
4
unreasoning(careless, stupid, unreasonable, thoughtless, irrational)
4
vain(adjective, slight, silly, trivial, ridiculous)
3
simpleminded(dull, silly, stupid, witless)
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APASmart Define. (2016). foolish thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/foolish/thesaurus/synonyms
ChicagoSmart Define. 2016. "foolish thesaurus" https://smartdefine.org/foolish/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2016, foolish thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/foolish/thesaurus/synonyms>.
MLASmart Define. "foolish thesaurus" 24 March 2016. Web. 28 September 2026. <https://smartdefine.org/foolish/thesaurus/synonyms>