Crossword clues for the word: SLACKEN The word SLACKEN has appeared as an answer to at least 5 crossword clues on different crossword puzzles. Crossword clues for SLACKEN Showing 1 to 5 of 5 results Clue(s) "Ease up, as a downpour" Have more play Loosen Lose tension Want, when in the money, to ease off