Webster’s Revised Unabridged Dictionary · 1913
Idiocrasy
Id′i·oc′ra·sy, n.; pl. Idiocrasies (#). [Idio- + Gr. κρᾶσις a mixture, fr. κεραννύναι to mix: cf. F. idiocrasie.] Peculiarity of constitution; that temperament, or state of constitution, which is peculiar to a person; idiosyncrasy.