Synonyms|605Antonyms|74|Broader|8Narrower|0Related|641

131 entries under foolish topic. ×

2
fatuous(adjective, wrong, wild, silly)
2
freaked out(expression, silly, crazy, mad)
2
half-baked(simple, silly, unsound, unwise)
2
inane(simple, silly, unsound, unwise)
2
incoherent(adjective, hot, unreasonable, illogical)
2
mad as a March hare(expression, idiom, silly, mad)
2
mad as a hatter(expression, adjective, idiom, silly)
2
mentally strange(expression, silly, mad, insane)
2
nonsensical(silly, crazy, mad, unreasonable)
2
round the bend(expression, idiom, silly, mad)
2
screw loose(expression, silly, mad, insane)
1
aberrant(hot, unreasonable, illogical, preoccupied)
1
absurd(adjective, wrong, wild, strange, silly)
1
acting crazy(expression, adjective, silly, crazy)
1
ape(silly, crazy, mad, insane)
1
bedlamite(noun, adjective, simple, silly)
1
cockamamie(adjective, wrong, silly, stupid)
1
derailed(adjective, wrong, wild, silly)
1
dingy(silly, mad, insane, unwise)
1
fallacious(false, unreasonable, ill, insane)
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APASmart Define. (2015). demented thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/demented/thesaurus/synonyms
ChicagoSmart Define. 2015. "demented thesaurus" https://smartdefine.org/demented/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, demented thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/demented/thesaurus/synonyms>.
MLASmart Define. "demented thesaurus" 17 July 2015. Web. 25 September 2026. <https://smartdefine.org/demented/thesaurus/synonyms>