Crossword clues for the word: KNIGHTMARE The word KNIGHTMARE has appeared as an answer to at least 4 crossword clues on different crossword puzzles. Crossword clues for KNIGHTMARE Showing 1 to 4 of 4 results Clue(s) Gawain's equine? Jouster's steed? Lancelot s horse? Lancelot's hair-raiser?