n. 25B6; noun PECULIARITY, oddity, eccentricity, mannerism, quirk, whim, vagary, caprice, kink; fetish, foible, crotchet, habit, characteristic; individuality; unconventionality, unorthodoxy; archaic megrim, freak.
IDIOSYNCRASY
Meaning of IDIOSYNCRASY in English
Concise Oxford thesaurus English vocabulary. Краткий оксфордский словарь английского языка тезаурус. 2012