n.; pl.Idiosyncrasies [ Gr. &unr_;; 'i`dios proper, peculiar + &unr_; a mixing together, fr. &unr_; to mix together; &unr_; with + &unr_; to mix: cf. F. idiosyncrasie. See Idiom, and Crasis. ] A peculiarity of physical or mental constitution or temperament; a characteristic belonging to, and distinguishing, an individual; characteristic susceptibility; idiocrasy; eccentricity. [ 1913 Webster ]
The individual mind . . . takes its tone from the idiosyncrasies of the body. I. Taylor.