FORNICATION /ˌfɔɹnɪˈkeɪʃən/ Scrabble 16 Words With Friends 19 Definition noun voluntary sexual intercourse between persons not married to each other. noun extramarital sex that willfully and maliciously interferes with marriage relations. — synonyms: adultery, criminal_conversation See all 277 words you can make from FORNICATION → 11-letter words Words starting with F Words ending with N ← Unscramble different letters