INSERTION /ɪnˈsɝʃən/ Scrabble 9 Words With Friends 11 Definition noun a message (spoken or written) that is introduced or inserted. — synonyms: interpolation noun the act of putting one thing into another. — synonyms: introduction, intromission See all 272 words you can make from INSERTION → 9-letter words Words starting with I Words ending with N ← Unscramble different letters