173 entries under foolish topic. ×

15
screwball(noun, adjective, slang, wild, silly)
14
deranged(noun, adjective, wild, silly)
14
kooky(adjective, weak, simple, wrong, wild)
14
mental(noun, adjective, slang, informal)
13
cracked(adjective, informal, wild, silly)
13
loopy(adjective, knowledge, ability, informal)
13
silly(adjective, light, weak, simple, wrong)
12
fatuous(adjective, weak, simple, wild, strange)
12
idiotic(adjective, weak, simple, knowledge, ability)
12
preposterous(adjective, weak, simple, wrong, knowledge)
12
unbalanced(adjective, silly, crazy, sane)
11
daffy(adjective, weak, simple, pleasant, happy)
11
goofy(adjective, light, stupid, crazy)
11
moronic(adjective, weak, simple, knowledge, ability)
10
crazed(adjective, wild, silly, stupid)
10
dippy(adjective, light, knowledge, slang, ability)
10
maniacal(adjective, silly, stupid, crazy)
10
touched(adjective, wrong, informal, wild, silly)
9
asinine(adjective, weak, simple, careless, silly)
9
buggy(adjective, slang, silly, crazy)
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APASmart Define. (2015). loony thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/loony/thesaurus/synonyms
ChicagoSmart Define. 2015. "loony thesaurus" https://smartdefine.org/loony/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, loony thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/loony/thesaurus/synonyms>.
MLASmart Define. "loony thesaurus" 10 April 2015. Web. 25 September 2026. <https://smartdefine.org/loony/thesaurus/synonyms>