Basic Guidelines For English Spellings
READ THESE ARTICLES
A peculiarity of physical or mental constitution; = "idiosyncrasy" 3.
Mid 17th century; earliest use found in John Webster. From Byzantine Greek ἰδιοκρασία peculiar temperament from ancient Greek ἰδιο- + -κρασία from κρᾶσις mixing, tempering + -ία.