Tough nut to crack crossword clue



Hello crossword solvers! Today let's find the answer to the clue Tough nut to crack from the USA Today crossword. After we've gathered any other hints from the USA Today crossword puzzle and all possible helpful and relevant information from other sources, we are ready to solve the clue Tough nut to crack. The answer we found for the clue Tough nut to crack is:

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The answer has 6 letters: ENIGMA

Last usage in USA Today crossword puzzle.