172 entries under foolish topic. ×

3
foolhardy(adjective, silly, crazy, fantastic)
3
half-witted(weak, simple, silly, thoughtless)
3
jerky(adjective, weak, simple, knowledge, slang)
3
odd(adjective, wild, strange, silly)
3
off-the-wall(adjective, unreasonable, illogical)
3
out of one's mind(adjective, idiom, ill, irrational)
3
outlandish(adjective, silly, ridiculous, absurd)
3
outrageous(adjective, silly, violence, fantastic)
3
puerile(adjective, silly, fantastic, unwise)
3
screwball(adjective, silly, crazy, mad)
3
short-sighted(adjective, weak, simple, silly)
3
unglued(adjective, upset, wild, silly)
3
wrong(adjective, unreasonable, sane, illogical)
2
bats in the belfry(expression, idiom, silly, mad)
2
bedlamite(adjective, simple, silly, crazy)
2
cockamamie(adjective, weak, simple, wrong, silly)
2
flipped(adjective, wild, silly, crazy)
2
flipped out(expression, adjective, wild, silly)
2
freaked out(expression, adjective, wild, silly)
2
ill-advised(adjective, weak, simple, silly)
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APASmart Define. (2015). insane thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/insane/thesaurus/synonyms
ChicagoSmart Define. 2015. "insane thesaurus" https://smartdefine.org/insane/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, insane thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/insane/thesaurus/synonyms>.
MLASmart Define. "insane thesaurus" 10 April 2015. Web. 25 September 2026. <https://smartdefine.org/insane/thesaurus/synonyms>