Crossword clues for the word: FLAREDUP The word FLAREDUP has appeared as an answer to at least 4 crossword clues on different crossword puzzles. Crossword clues for FLAREDUP Showing 1 to 4 of 4 results Clue(s) "Came back strong, as allergies" Became suddenly excited. Got angry and terribly rude when in a flap Recurred, as an ailment