adulterer
noun /əˈdʌltərə(r)/
/əˈdʌltərər/
(formal)- a person who commits adulteryWord Originearly 16th cent.: from the obsolete verb adulter ‘commit adultery’, from Latin adulterare ‘debauch, corrupt’, replacing an earlier Middle English noun avouterer, from Old French avoutrer ‘commit adultery’.