45 entries under sick topic. ×

14
nut(noun, slang, fanatic, patient)
13
screwball(noun, slang, fanatic, loony)
9
psycho(noun, slang, nut, fanatic)
8
nutter(noun, slang, mad person)
7
kook(noun, slang, mad person)
7
loony(noun, slang, mad person)
5
loon(noun, slang, nut, fanatic)
4
flake(noun, slang, fanatic, loony)
3
cuckoo(noun, slang, patient, loony)
2
nutjob(noun, slang, mad person)
1
basket case(noun, slang, mad person)
1
coo-coo(noun, slang, mad person)
1
crack-brain(noun, slang, mad person)
1
crack-skull(noun, slang, mad person)
1
fruit-cake(noun, slang, mad person)
1
goo-goo(noun, slang, mad person)
1
goof(noun, slang, mad person)
1
jerk(noun, slang, mad person)
1
jerk-off(noun, slang, mad person)
1
loom(noun, slang, mad person)
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APASmart Define. (2015). nutcase thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/nutcase/thesaurus/synonyms
ChicagoSmart Define. 2015. "nutcase thesaurus" https://smartdefine.org/nutcase/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, nutcase thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/nutcase/thesaurus/synonyms>.
MLASmart Define. "nutcase thesaurus" 14 April 2015. Web. 20 September 2026. <https://smartdefine.org/nutcase/thesaurus/synonyms>