Crossword clues for the word: PROOFPOSITIVE The word PROOFPOSITIVE has appeared as an answer to at least 3 crossword clues on different crossword puzzles. Crossword clues for PROOFPOSITIVE Showing 1 to 3 of 3 results Clue(s) "Smoking gun, e.g." DNA evidence, say Wino's blood type? (straight pun)