slut Syllabification: (slut)Pronunciation: /slət/Translate slut | into German | into Italian Definition of slut noun derogatory 1a woman who has many casual sexual partners. 2 dated a woman with low standards of cleanliness. Derivatives sluttish adjective sluttishness noun Origin: Middle English: of unknown originslut in other Oxford dictionaries Definition of slut in the British & World English dictionary