207 entries under foolish topic. ×

2
giddy(adjective, simple, rough, silly)
2
incoherent(adjective, stupid, hot, unreasonable)
2
incongruous(adjective, false, silly, stupid)
2
mad as a March hare(expression, idiom, silly, insane)
2
mad as a hatter(expression, adjective, idiom, silly)
2
nutty as fruitcake(expression, idiom, silly, insane)
2
quirky(adjective, stupid, senseless, irrational)
2
riotous(adjective, pleasant, rough, happy, energetic)
2
schizo(adjective, silly, insane, unwise)
2
unreasoning(adjective, unreasonable, irrational, illogical)
2
unzipped(adjective, upset, wild, silly)
2
uproarious(adjective, pleasant, rough, happy, energetic)
2
wayward(adjective, crazy, wicked, irrational)
1
bedlamite(adjective, simple, silly, crazy)
1
biased(adjective, wrong, violent, stupid)
1
boisterous(adjective, pleasant, rough, happy, energetic)
1
derailed(adjective, wrong, wild, silly)
1
dingy(silly, insane, unwise)
1
doltish(weak, simple, silly, thoughtless)
1
feebleminded(weak, simple, silly, thoughtless)
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APASmart Define. (2016). mad thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/mad/thesaurus/synonyms
ChicagoSmart Define. 2016. "mad thesaurus" https://smartdefine.org/mad/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, mad thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/mad/thesaurus/synonyms>.
MLASmart Define. "mad thesaurus" 24 March 2016. Web. 24 September 2026. <https://smartdefine.org/mad/thesaurus/synonyms>