Crossword clues for the word: SIGNSUP The word SIGNSUP has appeared as an answer to at least 9 crossword clues on different crossword puzzles. Crossword clues for SIGNSUP Showing 1 to 9 of 9 results Clue(s) Enlists Enrolls Enrols (2) Enrols in Society to drink, accepting gin cocktail Joins a club, say Joins army perhaps using ground in Spain Joins the mailing list Puts one's name on the dotted line Volunteers (for)