- idiosyncrasy, foible, mannerism - a behavioral attribute that is distinctive and peculiar to an individual
--1 is a kind of peculiarity, specialness, specialty, speciality, distinctiveness
- affectation, mannerism, pose, affectedness - a deliberate pretense or exaggerated display
--2 is a kind of pretense, pretence, pretending, simulation, feigning
--2 has particulars: attitude; radical chic