FLAGELLUM /fləˈdʒɛləm/ Scrabble 15 Words With Friends 21 Definition noun a whip used to inflict punishment (often used for pedantic humor). — synonyms: scourge noun a lash-like appendage used for locomotion (e.g., in sperm cells and some bacteria and protozoa). See all 101 words you can make from FLAGELLUM → 9-letter words Words starting with F Words ending with M ← Unscramble different letters