D defs.my
Entry 1 sense Webster, 1913

Idiosyncrasy

/ĭdˌ-ē-ōs-ĭn'-krəs-ēˌ/ · Id·i·o·syn·cra·sy · IPA /ˌɪdiəˈsɪŋkɹəsi/
01 n. A peculiarity of physical or mental constitution or temperament; a characteristic belonging to, and distinguishing, an individual; characte…
pl. Idiosyncrasies ((#))
  1. 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.” I. Taylor.