COUNTLESS /ˈkaʊntləs/ ► audio Scrabble 11 Words With Friends 15 Definition adjective too numerous to be counted. — synonyms: infinite, innumerable, innumerous, multitudinous, myriad, numberless, uncounted, unnumberable Examples “There is a countless number of stars.” See all 320 words you can make from COUNTLESS → 9-letter words Words starting with C Words ending with S ← Unscramble different letters