iniquity
noun
(plural
iniquities
)
immoral or grossly unfair behavior:
e.g.
a den of iniquity
e.g.
a liberal lawyer could uncover the iniquities committed on his own doorstep.
ORIGIN
Middle English
: from
Old French
iniquite
, from
Latin
iniquitas, from iniquus, from in- ‘not’ + aequus ‘equal, just’.