Crossword clues for the word: DONTKNOW The word DONTKNOW has appeared as an answer to at least 2 crossword clues on different crossword puzzles. Crossword clues for DONTKNOW Showing 1 to 2 of 2 results Clue(s) Are ignorant of the fact that you’re no friend of I ___ (third baseman in Abbott-Costello skit)