Crossword clues for the word: YELLOWFLAG The word YELLOWFLAG has appeared as an answer to at least 4 crossword clues on different crossword puzzles. Crossword clues for YELLOWFLAG Showing 1 to 4 of 4 results Clue(s) Daytona 500 caution Indy 500 caution Sign of a vessel in quarantine Signal meaning "no disease on this ship"