UMPTEENTH /ˈʌmp.tiːnθ/ ► audio Scrabble 16 Words With Friends 19 Definition adjective last in an indefinitely numerous series. — synonyms: umteenth, umptieth Examples “That's the umpteenth time I've had to tell him not to swear in front of the children.” See all 99 words you can make from UMPTEENTH → 9-letter words Words starting with U Words ending with H ← Unscramble different letters