The definition of an iniquity is a sin or wrong doing.
(noun)An example of an iniquity is someone running into another person with their car on purpose.
See iniquity in Webster's New World College Dictionary
noun
Origin: ME iniquite < OFr iniquité < L iniquitas < iniquus, unequal < in-, not + aequus, equal
See iniquity in American Heritage Dictionary 4
noun pl. in·iq·ui·ties
Origin:
Origin: Middle English iniquite
Origin: , from Old French
Origin: , from Latin inīquitās
Origin: , from inīquus, unjust, harmful
Origin: : in-, not; see in-1
Origin: + aequus, equal
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