iniquity

The story

1. Latin · derived frominīquitās“iniquity; inequality, unfairness; inequity, injustice”
2. Old French · derived frominiquité
3. Middle English · inherited frominiquite
4. English todayiniquity

From Middle English iniquite, jniquite (“evil, wickedness, iniquity; evil act; hostility, malevolence; hostile act; a calamity, misfortune”), from Old French iniquité (modern French iniquité (“iniquity”)), from Latin inīquitās (“iniquity; inequality, unfairness; inequity, injustice”), from inīquus (“unequal, uneven, unfair; disadvantageous, unfavourable; hostile, unkind; unsuitable; wicked, wrong”) + -itās (variant of -tās (suffix forming a noun indicating a state of being)). Inīquus is derived from in- (prefix meaning ‘not’) + aequus (“equal; fair, impartial, just”). Piecewise doublet of inequity.