[adul.tery] n, pl -ter.ies [ME, alter. of avoutrie, fr. MF, fr. L adulterium, fr. adulter adulterer, back-formation fr. adulterare] (15c): voluntary sexual intercourse between a married man and someone other than his wife or between a married woman and someone other than her husband; also: an act of adultery
ADULTERY
Meaning of ADULTERY in English
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012