Crossword clues for the word: XYST The word XYST has appeared as an answer to at least 5 crossword clues on different crossword puzzles. Crossword clues for XYST Showing 1 to 5 of 5 results Clue(s) Anc. Grecian promenade Ancient Greek promenade Axes by stone portico in Greece Portico of ancient Rome. Roman portico