Origin: 1300–50; Middle English < Latin inīquitās unevenness, unfairness, equivalent to inīqu(us) uneven, unfair (in-in-3 + -īquus, combining form of aequus even, equal) + -itās-ity
c.1300, from O.Fr. iniquité, from L. iniquitatem (nom. iniquitas) "unequalness, injustice," noun of quality from iniquus "unjust, unequal," from in- "not" + æquus "just, equal." For vowel change, see acquisition.