257 entries under foolish topic. ×

10
thoughtless(adjective, dull, sharp, rough, harsh)
10
unthinking(adjective, dull, careless, indifferent)
9
backward(adjective, dull, simple, slow, silly)
8
empty-headed(adjective, simple, careless, indifferent, silly)
8
half-witted(adjective, dull, weak, simple, slow)
8
loony(adjective, weak, simple, wrong, careless)
8
meaningless(adjective, dull, simple, slow, silly)
8
vacuous(adjective, dull, simple, slow, careless)
7
balmy(adjective, simple, wild, silly)
7
blockheaded(adjective, dull, simple, ability, slow)
7
childish(adjective, silly, rash, absurd)
7
dippy(adjective, weak, silly, crazy)
7
illogical(adjective, wrong, silly, crazy)
7
unwise(adjective, weak, simple, wrong, wild)
7
wacky(adjective, weak, simple, wrong, wild)
6
batty(adjective, wild, silly, insignificant)
6
cockeyed(silly, unwise)
6
cretinous(adjective, unintellectual)
6
cuckoo(adjective, silly, unwise)
6
daffy(adjective, weak, simple, slow, silly)
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APASmart Define. (2016). stupid thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/stupid/thesaurus/synonyms
ChicagoSmart Define. 2016. "stupid thesaurus" https://smartdefine.org/stupid/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2016, stupid thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/stupid/thesaurus/synonyms>.
MLASmart Define. "stupid thesaurus" 2 April 2016. Web. 26 September 2026. <https://smartdefine.org/stupid/thesaurus/synonyms>