Crossword clues for the word: STIFFENER The word STIFFENER has appeared as an answer to at least 3 crossword clues on different crossword puzzles. Crossword clues for STIFFENER Showing 1 to 3 of 3 results Clue(s) "Starch, as a laundry agent" A fortifying drink is what might make Hoskins get up! For men it could be Viagra or a whisky