140 entries under foolish topic. ×

7
loopy(adjective, knowledge, ability, informal)
6
inane(adjective, simple, silly, crazy)
6
ludicrous(adjective, weak, simple, silly)
6
preposterous(adjective, weak, simple, knowledge, ability)
6
tomfool(adjective, knowledge, ability)
6
witless(adjective, crazy, mad, odd)
6
zany(adjective, weak, simple, knowledge, ability)
5
frenzied(adjective, silly, stupid, crazy)
5
illogical(false, unstable, ill, shaky)
5
odd(adjective, wild, silly, crazy)
5
silly(adjective, weak, simple, knowledge, ability)
4
asinine(adjective, weak, simple, silly)
4
berserk(adjective, silly, crazy, mad)
4
eccentric(noun, adjective, wild, silly)
4
goofy(adjective, silly, unwise)
4
schizophrenic(noun, adjective, person, silly)
4
stupid(adjective, weak, simple, silly)
4
unsettled(silly, stupid, hot, crazy)
3
cockeyed(adjective, knowledge, ability, informal, silly)
3
flaky(adjective, informal, silly, crazy)
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APASmart Define. (2015). lunatic thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/lunatic/thesaurus/synonyms
ChicagoSmart Define. 2015. "lunatic thesaurus" https://smartdefine.org/lunatic/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, lunatic thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/lunatic/thesaurus/synonyms>.
MLASmart Define. "lunatic thesaurus" 6 August 2015. Web. 26 September 2026. <https://smartdefine.org/lunatic/thesaurus/synonyms>