Crossword clues for the word: MOUTHGUARD The word MOUTHGUARD has appeared as an answer to at least 4 crossword clues on different crossword puzzles. Crossword clues for MOUTHGUARD Showing 1 to 4 of 4 results Clue(s) Defender of a river area? Protector in the ring Sentry watching over a river's end? Teeth-and-gums protector