Crossword clues for the word: THEHORSESMOUTH The word THEHORSESMOUTH has appeared as an answer to at least 6 crossword clues on different crossword puzzles. Crossword clues for THEHORSESMOUTH Showing 1 to 6 of 6 results Clue(s) Alec Guinness classic: 1958 First hand? Source of firm information Symbol of high authority Unimpeachable source Unquestionable authority