120 entries under foolish topic. ×

9
wacky(adjective, informal, crazy, mad)
8
empty-headed(adjective, careless, indifferent, silly)
8
imbecilic(adjective, dull, weak, simple, slow)
8
irrational(adjective, weak, simple, careless, silly)
8
nutty(adjective, weak, simple, silly)
8
thoughtless(adjective, careless, indifferent, silly)
7
absurd(adjective, crazy, mad, odd)
7
daffy(adjective, weak, simple, slow, silly)
7
imbecile(adjective, dull, simple, silly)
7
inane(adjective, dull, simple, slow, careless)
7
insane(adjective, weak, simple, silly)
7
insensate(adjective, dull, simple, ability, slow)
7
lunatic(adjective, crazy, mad, odd)
7
obtuse(adjective, dull, simple, slow, careless)
7
thick(adjective, dull, simple, slow, silly)
6
dippy(adjective, weak, simple, silly)
6
feeble-minded(adjective, simple, slow, stupid)
6
half-baked(adjective, dull, weak, simple, slow)
6
half-witted(adjective, dull, weak, simple, slow)
6
unthinking(adjective, dull, simple, slow, careless)
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APASmart Define. (2015). witless thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/witless/thesaurus/synonyms
ChicagoSmart Define. 2015. "witless thesaurus" https://smartdefine.org/witless/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, witless thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/witless/thesaurus/synonyms>.
MLASmart Define. "witless thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/witless/thesaurus/synonyms>