Crossword clues for the word: UNIONSUIT The word UNIONSUIT has appeared as an answer to at least 4 crossword clues on different crossword puzzles. Crossword clues for UNIONSUIT Showing 1 to 4 of 4 results Clue(s) A.F.L.-C.I.O. court case? Grandpa's underwear One-piece knitted undergarment Patriot's old-fashioned underwear item