12
crazy(fanatic, dingbat, ultraist)
11
insane
7
nut(noun, crazy, mad, fanatic, lunatic)
6
crackpot(noun, character, crazy, mad, eccentric)
6
crank(noun, crazy, mad, lunatic, schizophrenic)
6
nut case(noun, expression, idiom, character, fanatic)
6
nutcase(noun, character, freak, loony, oddball)
6
screwball(noun, nut, fanatic, freak, loony)
3
cake
3
eccentric(character, freak, dissentient, misfit, oddball)
3
freak(nut, fanatic, loony, oddball, enthusiast)
3
kook(noun, person, crazy, mad, fanatic)
3
lunatic(noun, person, mad, nut, fanatic)
3
maniac(noun, person, mad, lunatic, neurotic)
3
psycho(noun, mad, nut, lunatic, loony)
2
Nut
2
addict
2
ball
2
churl
2
crosspatch
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APASmart Define. (2015). fruitcake thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/fruitcake/thesaurus/synonyms
ChicagoSmart Define. 2015. "fruitcake thesaurus" https://smartdefine.org/fruitcake/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, fruitcake thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/fruitcake/thesaurus/synonyms>.
MLASmart Define. "fruitcake thesaurus" 14 April 2015. Web. 21 September 2026. <https://smartdefine.org/fruitcake/thesaurus/synonyms>