158 entries under silly topic. ×

3
outrageous(adjective, rough, wild, foolish)
3
peculiar(adjective, unusual, strange, foolish)
3
pointless(adjective, stupid, insignificant, ridiculous)
3
psychopathic(adjective, foolish, stupid, irrational)
3
schizophrenic(noun, adjective, wrong, foolish)
3
short-sighted(adjective, weak, simple, foolish)
3
unintelligent(adjective, weak, simple, foolish)
3
unrealistic(adjective, foolish, unwise)
3
warm(adjective, concern, foolish, crazy)
2
ape(foolish, crazy, insane, irrational)
2
bats in the belfry(expression, idiom, foolish, insane)
2
cockamamie(adjective, weak, simple, wrong)
2
cockamamy(foolish, thoughtless, unwise, unintelligent)
2
flipped(adjective, wild, enthusiastic, foolish)
2
flipped out(expression, adjective, wild, foolish)
2
freaked out(expression, adjective, wild, enthusiastic)
2
giddy(adjective, simple, rough, foolish)
2
incongruous(adjective, false, foolish, stupid)
2
mad as a March hare(expression, idiom, foolish, insane)
2
mad as a hatter(expression, adjective, idiom, foolish)
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APASmart Define. (2016). mad thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/mad/thesaurus/synonyms
ChicagoSmart Define. 2016. "mad thesaurus" https://smartdefine.org/mad/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, mad thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/mad/thesaurus/synonyms>.
MLASmart Define. "mad thesaurus" 24 March 2016. Web. 25 September 2026. <https://smartdefine.org/mad/thesaurus/synonyms>