IDIOSYNCRASY Meaning of IDIOSYNCRASY in English idiosyncras|y BrE AmE ˌɪd i‿ə ʊ ˈsɪŋk rəs |i AmE \ -i‿ə-▷ idiosyncras|ies iz Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012