Longman Dictionary English From Longman Dictionary of Contemporary EnglishRelated topics: Lawco-respondentco-res‧pon‧dent /ˌkəʊrəˈspɒndənt $ ˌkoʊrəˈspɑːn-/ noun [countable] SCLsomeone whose name is given in a divorce because they have had sex with the wife or husband of the person who wants the divorce → respondent ldoceonline.com