22 entries under eccentric topic. ×

28
insane(noun, adjective, impractical, half-baked)
21
lunatic(noun, adjective, person, crazy, mad)
17
maniac(noun, person, crazy, mad)
16
screwball(noun, adjective, person, character, slang)
15
kook(noun, person, character, slang, crazy)
15
nut(noun, character, slang, crazy, mad)
11
crank(noun, informal, crazy, mad, original)
10
bedlamite(noun, person, character, crazy, nut)
8
oddball(noun, adjective, character, crazy)
6
fruitcake(noun, character, crazy, mad)
5
wacko(noun, character, crazy, lunatic)
4
character(original, freak, dissentient, misfit)
4
dingbat(noun, character, slang, crazy, wise)
4
kooky(adjective, lunatic)
3
batty(adjective, impractical, half-baked, doomed)
3
flake(noun, crazy, mad, freak)
2
dement(noun, character, crazy, loony)
2
fanatic(noun, character, crazy, original)
2
peculiar(adjective, impractical, half-baked, doomed)
2
strange(adjective, impractical, half-baked, doomed)
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APASmart Define. (2015). crackpot thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/crackpot/thesaurus/synonyms
ChicagoSmart Define. 2015. "crackpot thesaurus" https://smartdefine.org/crackpot/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, crackpot thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/crackpot/thesaurus/synonyms>.
MLASmart Define. "crackpot thesaurus" 10 April 2015. Web. 26 September 2026. <https://smartdefine.org/crackpot/thesaurus/synonyms>