The clue "Tough nut to crack" last appeared in the New York Times crossword on August 22, 2024. The correct answer for this puzzle is "ENIGMA", a 6-letter word.
Solution ENIGMA is our most searched for solution by our visitors. Solution ENIGMA is 6 letters long. We have 0 further solutions of the same word length.
There are 4 solutions. The longest is ENIGMA with 6 letters, and the shortest is ACORN with 5 letters.
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Solutions are between 5 and 6 letters long.