498 entries under adjective topic. ×

5
cockeyed(knowledge, ability, informal, silly)
5
crackpot(impractical, half-baked, doomed)
5
dense(dull, simple, slow, silly)
5
eccentric(wild, strange, silly, crazy)
5
erratic(wrong, wild, strange, silly)
5
feebleminded(weak, simple, silly, stupid)
5
gooselike
5
goosey
5
ill-judged(careless, silly, thoughtless, rash)
5
incongruous(silly, stupid, insignificant, unreasonable)
5
inconsistent(simple, wrong, silly, stupid)
5
light-headed(silly, faint)
5
pointless(dull, simple, slow, silly)
5
simple-minded(silly, stupid, green, fat)
5
slight
5
unintellectual
4
amusing(silly, ridiculous, absurd, irritating)
4
brash(careless, silly, crazy, thoughtless)
4
confused(careless, stupid, unreasonable, thoughtless)
4
dimwitted(silly, stupid, green, fat)
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APASmart Define. (2016). foolish thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/foolish/thesaurus/synonyms
ChicagoSmart Define. 2016. "foolish thesaurus" https://smartdefine.org/foolish/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, foolish thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/foolish/thesaurus/synonyms>.
MLASmart Define. "foolish thesaurus" 24 March 2016. Web. 23 September 2026. <https://smartdefine.org/foolish/thesaurus/synonyms>