Idiosyncrasy /(?)/

Id·i·o·syn·cra·sy

Idiosyncrasy

n.

pl. Idiosyncrasies

  1. A peculiarity of physical or mental constitution or temperament; a characteristic belonging to, and distinguishing, an individual; characteristic susceptibility; idiocrasy; eccentricity.
    The individual mind . . . takes its tone from the idiosyncrasies of the body.