Main Entry: adul·tery

Pronunciation: \ə-ˈdəl-t(ə-)rē\

Function: noun

Inflected Form(s): plural adul·ter·ies

Etymology: Middle English, alteration of avoutrie, from Anglo-French avulterie, from Latin adulterium, from adulter adulterer, back-formation from adulterare

Date: 15th century

: 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