noun, plural in·iq·ui·ties.
- gross injustice or wickedness.
- a violation of right or duty; wicked act; sin.
noun plural -ties
- lack of justice or righteousness; wickedness; injustice
- a wicked act; sin
c.1300, “hostility, malevolence; a hostile action,” from Old French iniquité “wickedness, unfavorable situation,” from Latin iniquitatem (nominative iniquitas) “unequalness, unevenness, injustice,” noun of quality from iniquus “unjust, unequal; slanting, steep,” from in- “not” (see in- (1)) + aequus “just, equal” (see equal). For vowel change, see acquisition. Meaning “evil, wickedness” is from late 14c.