185 entries under adjective topic. ×

4
dim-witted(foolish, stupid)
4
feeble-minded(silly, foolish, stupid, vague)
4
futile(silly, ridiculous, absurd, pointless)
4
gaga(insane, distraught, batty)
4
obtuse
4
thickheaded
3
puerile(characteristic, silly, foolish, stupid)
3
wacky(weak, simple, wild, silly)
3
soft
3
balmy(silly, foolish, stupid, fantastic)
3
doltish(weak, simple, silly, foolish)
3
dopey
3
fatuitous
3
gormless
3
ineffective
3
ineffectual
3
purposeless(silly, stupid, insignificant, ridiculous)
3
risible
3
simple-minded(foolish, stupid)
3
slow-witted
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APASmart Define. (2015). fatuous thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/fatuous/thesaurus/synonyms
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>