13
screwball(noun, adjective, person, character, slang)
12
cranky(adjective, characteristic, person, difficult, extraordinary)
12
nonconformist(noun, adjective, person, character, unusual)
11
flaky(adjective, unusual, strange, crazy, unstable)
11
free spirit(noun, expression, idiom, radical, rebel)
11
geek(noun, freak, oddball)
11
kooky(adjective, character, slang, unusual, wild)
11
mad(adjective, characteristic, person, unusual, wild)
11
nutty(adjective, unusual, wild, strange, silly)
11
original(noun, adjective, person, character, figure)
11
unique(adjective, feature, unusual, strange, new)
10
nut(noun, person, character, slang, informal)
10
off-the-wall(adjective, character, unusual, strange, wonderful)
9
case(noun, character, figure, original, personality)
9
far-out(adjective, unusual, wild, strange, fantastic)
9
grotesque(adjective, ridiculous, ridiculousness)
9
incongruous(adjective, unusual, strange, usual, irregular)
9
remarkable(adjective, strange, new, exceptional, special)
9
unbalanced(adjective, characteristic, person, unusual, wild)
9
unorthodox(adjective, unusual, strange, exceptional, special)
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APASmart Define. (2016). eccentric thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/eccentric/thesaurus/synonyms
ChicagoSmart Define. 2016. "eccentric thesaurus" https://smartdefine.org/eccentric/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2016, eccentric thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/eccentric/thesaurus/synonyms>.
MLASmart Define. "eccentric thesaurus" 30 March 2016. Web. 22 September 2026. <https://smartdefine.org/eccentric/thesaurus/synonyms>