idiosincrasia — meaning in English

English meaning

foible noun A small, slightly odd habit or personal quirk.
idiosyncrasy noun An unusual habit or feature belonging to one particular person, which marks them out from everyone else.

idiosincrasia is used for these senses in English:

foible (mostly, in plural) A quirk, idiosyncrasy, frailty, or mannerism; an unusual habit that is slightly strange or silly.
idiosyncrasy A behavior or way of thinking that is characteristic of a person.
idiosyncrasy A language or behaviour that is particular to an individual or group.
idiosyncrasy (medicine) A peculiar individual reaction to a generally innocuous substance or factor.
idiosyncrasy A peculiarity that serves to distinguish or identify.

noun A small, slightly odd habit or personal quirk.
noun A minor weakness in someone's character.
noun (fencing) The weaker part of a sword blade, between the middle and the tip.

noun An unusual habit or feature belonging to one particular person, which marks them out from everyone else.
noun An odd or distinctive characteristic of a thing, place or system.
noun An unusual physical reaction that a particular individual has to a drug or food.