498 entries under adjective topic. ×

10
impolitic(wrong, careless, stupid, thoughtless)
10
incautious(weak, simple, careless, silly)
10
reckless(careless, silly, stupid, crazy)
10
unthinking(dull, simple, wrong, slight)
9
bizarre(wild, strange, silly, stupid)
9
extravagant(rough, strange, stupid, crazy)
9
hare-brained(silly, crazy, zany, wacky)
9
harebrained(weak, simple, knowledge, ability)
9
inadvisable(rash, unwise, risky, recommended)
9
irresponsible(careless, silly, stupid, fantastic)
9
outlandish(offensive, rude, wild, strange)
9
vacuous(careless, indifferent, silly, stupid)
8
balmy(knowledge, slang, ability, wild)
8
batty(wild, silly, stupid, crazy)
8
comical(strange, silly, crazy, insane)
8
cuckoo(silly, stupid, unwise)
8
empty-headed(slight, careless, indifferent, silly)
8
half-baked(dull, simple, stupid, fantastic)
8
heedless(careless, wild, silly, stupid)
8
ignorant(simple, slight, rough, silly)
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APASmart Define. (2016). foolish thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/foolish/thesaurus/synonyms
ChicagoSmart Define. 2016. "foolish thesaurus" https://smartdefine.org/foolish/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, foolish thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/foolish/thesaurus/synonyms>.
MLASmart Define. "foolish thesaurus" 24 March 2016. Web. 23 September 2026. <https://smartdefine.org/foolish/thesaurus/synonyms>