65 entries under unusualness topic. ×

40
peculiarity(noun, nature, feature, characteristic, change)
31
quirk(noun, feature, characteristic, quality, character)
19
eccentricity(noun, characteristic, weakness, twist, fault)
17
oddity(noun, characteristic, quality, character, weakness)
14
singularity(noun, nature, feature, characteristic, change)
12
foible(noun, weakness, twist, fault, trait)
10
irregularity(noun, characteristic, change, chance, unconformity)
8
abnormality(noun, characteristic, complex, quirk, unconformity)
7
aberration(noun, characteristic, change, complex, unconformity)
7
kink(noun, characteristic, weakness, quirk, peculiarity)
6
unconventionality(noun, characteristic, originality, individuality, quirk)
5
anomaly(noun, characteristic, change, difference, unconformity)
5
idiocrasy(tendency, originality, eccentricity, peculiarity, nonconformity)
5
quirkiness(noun, usual, originality, eccentricity, unconformity)
4
strangeness(noun, characteristic, deviation, originality, individuality)
3
caprice(noun, chance, peculiarity, nonconformity)
3
freakishness(noun, characteristic, quirk, irregularity, unconformity)
3
nonconformity(noun, characteristic, change, opposition, difference)
2
originality(noun, nature, feature, characteristic, quality)
2
outlandishness(noun, characteristic, quirk, irregularity, unconformity)
10 years ago|14k views|share |citing 
APASmart Define. (2016). idiosyncrasy thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/idiosyncrasy/thesaurus/synonyms
ChicagoSmart Define. 2016. "idiosyncrasy thesaurus" https://smartdefine.org/idiosyncrasy/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2016, idiosyncrasy thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/idiosyncrasy/thesaurus/synonyms>.
MLASmart Define. "idiosyncrasy thesaurus" 31 March 2016. Web. 29 September 2026. <https://smartdefine.org/idiosyncrasy/thesaurus/synonyms>