INFIX Scrabble 15 Words With Friends 16 Definition noun an affix that is inserted inside the word. verb put or introduce into something. — synonyms: insert, enter, introduce verb attach a morpheme into a stem word. Examples “to infix a sting, spear, or dart” See all 7 words you can make from INFIX → 5-letter words Words starting with I Words ending with X ← Unscramble different letters