id·i·o·syn·cra·sy /ˌɪdiəˈsɪŋkrəsi/ noun (plural idiosyncrasies) [countableC] 1 HABITan unusual habit or way of behaving that someone has 〔个人特有的〕习性,癖好 my uncle’s idiosyncrasies 我叔叔的癖好
2 CHARACTER OF somethingan unusual or unexpected feature that something has 〔某物的〕异质,特点 one of the many idiosyncrasies of English spelling 英语拼写的众多特点之一
—idiosyncratic /ˌɪdiəsɪnˈkrætɪk◂/ adjectiveadj