174 entries under foolish topic. ×

1
demented(simple, silly, unsound, unwise)
1
deranged(simple, silly, stupid, unsound)
1
derisory(silly, fantastic, pathetic, half-baked)
1
erratic(silly, unwise)
1
fantastic(silly, pitiful, pathetic, half-baked)
1
gullible(adjective, dull, simple, slow, silly)
1
half-baked(dull, simple, slight, stupid)
1
hasty(adjective, rash, risky, superficial)
1
ill-conceived(silly, fantastic, unwise, impractical)
1
immature(adjective, silly, stupid, absurd)
1
impracticable(silly, fantastic, unwise, impractical)
1
improvident(adjective, rash, risky)
1
inappropriate(silly, stupid, fantastic, absurd)
1
indiscreet(adjective, dull, rash, risky)
1
insensate(adjective, dull, simple, slow, silly)
1
moonstruck(adjective, soft, tender, sweet, wild)
1
nitwitted(adjective, simple, silly, stupid)
1
odd(silly, fantastic, unwise, impractical)
1
out of all reason(expression, idiom, silly, fantastic)
1
out to lunch(expression, idiom, dull, silly)
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APASmart Define. (2015). inane thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/inane/thesaurus/synonyms
ChicagoSmart Define. 2015. "inane thesaurus" https://smartdefine.org/inane/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, inane thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/inane/thesaurus/synonyms>.
MLASmart Define. "inane thesaurus" 13 April 2015. Web. 25 September 2026. <https://smartdefine.org/inane/thesaurus/synonyms>