A quirk, idiosyncrasy, or mannerism; an unusual habit that is slightly strange or silly.
A weakness or failing of character.
Part of a sword between the middle and the point, weaker than the forte.
A behavior or way of thinking that is characteristic of a person.
A peculiar individual reaction to a generally innocuous substance or factor.
A peculiarity that serves to distinguish or identify.
A language or behaviour that is particular to an individual or group.