1. (noun)idiosyncrasy, foible, mannerism a behavioral attribute that is distinctive and peculiar to an individual Synonyms: affectation, foible, affectedness, mannerism, idiosyncrasy, pose
2. (noun)affectation, mannerism, pose, affectedness a deliberate pretense or exaggerated display Synonyms: idiosyncrasy, foible, mannerism, affectation, affectedness, pose, airs