252 entries under silly topic. ×

5
feebleminded(adjective, weak, simple, stupid)
5
ill-judged(adjective, careless, thoughtless, rash)
5
incongruous(adjective, stupid, insignificant, unreasonable)
5
inconsistent(adjective, simple, wrong, stupid)
5
light-headed(adjective, faint)
5
pointless(adjective, dull, simple, slow)
5
simple-minded(adjective, stupid, green, fat)
4
amusing(adjective, ridiculous, absurd, irritating)
4
boneheaded(impulsive, impractical, unintelligent, unaware)
4
brash(adjective, careless, crazy, thoughtless)
4
dimwitted(adjective, stupid, green, fat)
4
droll(adjective, ridiculous, absurd, amusing)
4
fanciful(adjective, strange, excessive, expensive)
4
nitwitted(adjective, simple, stupid, senseless)
4
potty(adjective, wild, stupid, crazy)
4
screwball(adjective, unwise)
4
vacant(adjective, careless, indifferent, stupid)
4
vain(adjective, slight, trivial, ridiculous)
3
feeble(adjective, stupid, green, fat)
3
flaky(adjective, wrong, wild, stupid)
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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>