adj. 25B6; adjective DISTINCTIVE, individual, individualistic, characteristic, peculiar, typical, special, specific, unique, personal; eccentric, unconventional, irregular, anomalous, odd, quirky, queer, strange, weird, bizarre, freakish; informal freaky.
IDIOSYNCRATIC
Meaning of IDIOSYNCRATIC in English
Concise Oxford thesaurus English vocabulary. Краткий оксфордский словарь английского языка тезаурус. 2012