Synonyms|526Antonyms|215|Broader|35Narrower|44Related|1.9k

141 entries under foolish topic. ×

1
ill-advised(weak, simple, silly, thoughtless)
1
ill-conceived(silly, fantastic, unwise, impractical)
1
ill-considered(weak, simple, silly, thoughtless)
1
impracticable(silly, fantastic, unwise, impractical)
1
impractical(adjective, wrong, wild, silly)
1
inappropriate(silly, stupid, fantastic, absurd)
1
incautious(weak, simple, silly, thoughtless)
1
injudicious(weak, simple, silly, thoughtless)
1
mad as a hatter(expression, idiom, wrong, wild, silly)
1
mental(silly, stupid, unwise)
1
moonstruck(adjective, silly, stupid, insane)
1
nerdy(weak, simple, silly, thoughtless)
1
nutty as fruitcake(expression, idiom, wrong, wild, silly)
1
odd(silly, fantastic, unwise, impractical)
1
of unsound mind(expression, idiom, stupid, crazy)
1
out of all reason(expression, idiom, silly, fantastic)
1
outlandish(adjective, silly, unwise)
1
outrageous(adjective, silly, fantastic, unwise)
1
peculiar(silly, fantastic, unwise, impractical)
1
psychopathic(wrong, wild, silly, stupid)
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ChicagoSmart Define. 2015. "fatuous thesaurus" https://smartdefine.org/fatuous/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, fatuous thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/fatuous/thesaurus/synonyms>.
MLASmart Define. "fatuous thesaurus" 10 April 2015. Web. 23 September 2026. <https://smartdefine.org/fatuous/thesaurus/synonyms>