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45 entries under noun topic. ×

1
basket case(slang, sick, mad person)
1
coo-coo(slang, sick, mad person)
1
crack-brain(slang, sick, mad person)
1
crack-skull(slang, sick, mad person)
1
cuckoo(slang, sick, mad person)
1
flake(slang, sick, mad person)
1
fruit-cake(slang, sick, mad person)
1
goo-goo(slang, sick, mad person)
1
goof(slang, sick, mad person)
1
jerk(slang, sick, mad person)
1
jerk-off(slang, sick, mad person)
1
knee-jerk(slang, sick, mad person)
1
kook(slang, sick, mad person)
1
loom(slang, sick, mad person)
1
loon(slang, sick, mad person)
1
loony(slang, sick, mad person)
1
loony tune(slang, sick, mad person)
1
luny(slang, sick, mad person)
1
mental(slang, sick, mad person)
1
mishoogeh(slang, sick, mad person)
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APASmart Define. (1970). looneybin thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/looneybin/thesaurus/synonyms
ChicagoSmart Define. 1970. "looneybin thesaurus" https://smartdefine.org/looneybin/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 1970, looneybin thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/looneybin/thesaurus/synonyms>.
MLASmart Define. "looneybin thesaurus" 1 January 1970. Web. 29 September 2026. <https://smartdefine.org/looneybin/thesaurus/synonyms>