141 entries under silly topic. ×

4
unwise(adjective, weak, simple, foolish)
4
weird(adjective, wild, strange, foolish)
4
zany(adjective, weak, simple, knowledge, ability)
3
erratic(adjective, wild, strange, foolish)
3
foolhardy(adjective, foolish, crazy, fantastic)
3
half-witted(weak, simple, foolish, thoughtless)
3
jerky(adjective, weak, simple, knowledge, slang)
3
odd(adjective, wild, strange, foolish)
3
outlandish(adjective, foolish, ridiculous, absurd)
3
outrageous(adjective, foolish, violence, fantastic)
3
puerile(adjective, foolish, fantastic, unwise)
3
screwball(adjective, foolish, crazy, mad)
3
short-sighted(adjective, weak, simple, foolish)
3
unglued(adjective, upset, wild, foolish)
2
bats in the belfry(expression, idiom, foolish, mad)
2
bedlamite(adjective, simple, foolish, crazy)
2
cockamamie(adjective, weak, simple, wrong)
2
cockamamy(thoughtless, unwise)
2
flipped(adjective, wild, foolish, crazy)
2
flipped out(expression, adjective, wild, foolish)
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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>