Definitions from Wiktionary (idiosyncrasy)

▸ noun:  A behavior or way of thinking that is characteristic of a person.
▸ noun:  A language or behaviour that is particular to an individual or group.
▸ noun:  (medicine) A peculiar individual reaction to a generally innocuous substance or factor.
▸ noun:  A peculiarity that serves to distinguish or identify.
▸ Also see idiosyncrasy

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