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

185 entries under adjective topic. ×

3
thick-witted(foolish, crazy, insane)
3
unoccupied
3
vain(silly, ridiculous, absurd, pointless)
3
vapid
2
jerky(characteristic, weak, simple, silly)
2
vacant(thoughtless, imbecility folly)
2
blank
2
anserine
2
bird-brained
2
bootless
2
demented(wrong, wild, silly, foolish)
2
extravagant
2
extreme
2
feather-brained
2
flaky(wild, silly, foolish, stupid)
2
fond
2
foolhardy(silly, foolish, stupid, crazy)
2
forgetful
2
fruitless
2
halfwitted
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ChicagoSmart Define. 2015. "fatuous thesaurus" https://smartdefine.org/fatuous/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, fatuous thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/fatuous/thesaurus/synonyms>.
MLASmart Define. "fatuous thesaurus" 10 April 2015. Web. 24 September 2026. <https://smartdefine.org/fatuous/thesaurus/synonyms>