idiosyncrasy
Pronunciation:
/ˌɪd.i.əʊˈsɪŋ.kɹə.si//ˌɪdɪə(ʊ)ˈsɪŋkɹəsi//ˌɪdioʊˈsɪŋkɹəsi/noun
Definitions
A behavior or way of thinking that is characteristic of a person.
A language or behaviour that is particular to an individual or group.
A peculiar individual reaction to a generally innocuous substance or factor.
A peculiarity that serves to distinguish or identify.
Example: He mastered the idiosyncrasies of English spelling and speech.