97 entries under foolish topic. ×

20
crazy(adjective, informal, strange, silly)
19
mad(adjective, simple, silly, crazy)
18
insane(adjective, simple, silly, crazy)
14
deranged(adjective, simple, silly, mad)
14
unbalanced(adjective, silly, crazy, mad)
14
nuts(adjective, slang, silly, crazy)
13
lunatic(adjective, simple, silly, mad)
13
psychotic(adjective, silly, stupid, insane)
13
loony(noun, adjective, slang, informal)
10
daft(adjective, informal, silly, stupid)
10
batty(adjective, silly, stupid, crazy)
10
bonkers(adjective, simple, silly, mad)
9
barmy(adjective, silly, crazy, mad)
9
demented(adjective, simple, silly, mad)
9
nutty(adjective, simple, silly, mad)
9
screwy(adjective, silly, crazy, mad)
9
unhinged(adjective, simple, silly, mad)
8
balmy(adjective, silly, unwise)
8
crazed(adjective, silly, stupid, crazy)
7
cracked(adjective, simple, silly, mad)
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APASmart Define. (2015). mental thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/mental/thesaurus/synonyms
ChicagoSmart Define. 2015. "mental thesaurus" https://smartdefine.org/mental/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, mental thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/mental/thesaurus/synonyms>.
MLASmart Define. "mental thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/mental/thesaurus/synonyms>