Crossword clues for the word: KRYPTONITE The word KRYPTONITE has appeared as an answer to at least 6 crossword clues on different crossword puzzles. Crossword clues for KRYPTONITE Showing 1 to 6 of 6 results Clue(s) *“Superman” "Fictional substance in ""Superman""" Element in comic books since 1949 Fictional material Superman was attacked with in "Batman v. Superman: Dawn of Justice" Superhero's undoing Superman's bane