Synonyms|526Antonyms|215|Broader|35Narrower|44Related|1.9k
2
anserine
2
bird-brained
2
blockheaded(impractical, half-baked, doomed)
2
bootless
2
chuckleheaded
2
crackpot(impractical, half-baked, doomed)
2
demented(adjective, wrong, wild, silly, foolish)
2
doting(loving, fond)
2
dunderheaded
2
extravagant
2
extreme
2
feather-brained
2
flaky(adjective, wild, silly, foolish, stupid)
2
fond(adjective, loving)
2
foolhardy(adjective, silly, foolish, stupid, crazy)
2
forgetful
2
frivolous
2
fruitless
2
half-baked(weak, simple, silly, foolish, fantastic)
2
halfwitted
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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>