Crossword clues for the word: SHOWUP The word SHOWUP has appeared as an answer to at least 6 crossword clues on different crossword puzzles. Crossword clues for SHOWUP Showing 1 to 6 of 6 results Clue(s) Arrive Arrive or outperform Arrive when the entertainment's finished Arrive, but not for a showdown! Be present at something more highly entertaining? Cause embarrassment simply by arriving?