A skeleton one is very useful WSJ Crossword Clue

By Narcissa Kh /

Crossword Answer

1 ? K
2 ? E
3 ? Y
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      Hint 1

      hint
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      Think of something that can unlock many mysteries.

      Hint 2

      meaning
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      A ??? is a device used to operate a lock.

      Hint 3

      explanation
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      The clue uses wordplay around the term 'skeleton ???,' which is a type of ??? designed to open many locks. The phrase 'very useful' hints at the versatility and utility of such a ???.

      Hint 4

      another clue
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      C major, e.g., Map legend, Part of a piano, map or Florida, Poorly hidden item under a welcome mat, perhaps, F sharp major, for one

      Clue Analysis

      The clue “A skeleton one is very useful” is a classic crossword staple, frequently appearing in puzzles like the WSJ crossword. For the puzzle dated October 30 2025, the definitive 3-letter answer is: KEY.

      Expert Tip: When you’re stuck, try to analyze the structure of the clue itself. Is it a direct definition, a pun, a fill-in-the-blank, or a pop culture reference? Identifying the type of clue you’re dealing with is a key skill for improving your solving speed.

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      A skeleton one is very useful Crossword Clue