140 entries under foolish topic. ×

12
idiotic(adjective, weak, simple, knowledge, ability)
12
mental(adjective, simple, silly, mad)
12
non compos mentis(expression, adjective, idiom, law)
12
nuts(noun, adjective, slang, wild, silly)
12
screwy(adjective, slang, wild, silly)
11
cracked(adjective, informal, wild, silly)
11
moonstruck(noun, adjective, silly, stupid)
11
touched(adjective, wild, silly, stupid)
11
unhinged(adjective, silly, crazy, mad)
10
screwball(noun, adjective, slang, wild, silly)
9
bedlamite(noun, adjective, person, silly)
9
dippy(adjective, weak, knowledge, slang, ability)
9
dotty(adjective, weak, simple, silly)
9
unsound(adjective, crazy, mad, unstable)
8
kooky(adjective, weak, simple, wild, silly)
8
potty(adjective, wild, silly, crazy)
8
wild(adjective, silly, stupid, crazy)
7
daffy(adjective, weak, simple, informal, silly)
7
fruity(adjective, slang, silly, mad)
7
imbecile(silly, crazy, insane, unintelligent)
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APASmart Define. (2015). lunatic thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/lunatic/thesaurus/synonyms
ChicagoSmart Define. 2015. "lunatic thesaurus" https://smartdefine.org/lunatic/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, lunatic thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/lunatic/thesaurus/synonyms>.
MLASmart Define. "lunatic thesaurus" 6 August 2015. Web. 25 September 2026. <https://smartdefine.org/lunatic/thesaurus/synonyms>