Word Origin & History
odiumc.1600, "fact of being hated," from L. odium "ill-will, hatred, offense," related to odi "I hate" (infinitive odisse), from PIE base *od- "to hate" (cf. Armenian ateam "I hate," O.N. atall, O.E. atol "dire, horrid, loathsome"). Meaning "hatred, detestation" is from 1650s. Often in an extended form, e.g.
odium theologicum "hatred which is proverbially characteristic of theological disputes" (1670s).