Crossword clues for the word: MUTTERER The word MUTTERER has appeared as an answer to at least 4 crossword clues on different crossword puzzles. Crossword clues for MUTTERER Showing 1 to 4 of 4 results Clue(s) One grumbling in a low voice One speaking indistinctly One who can hardly be made out Primarily murmuring speaker?