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Hard To Solve Problem Crossword Clue

There is 1 exact and 158 possible answers.
We've checked our database and believe the answer is KNOT which was last seen in the New York Times crossword.
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We think the answer to this crossword clue is: KNOT

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Expand?LettersAnswerClue
99%4Exact Match!
noun

• a tight cluster of people or things

• any of various fastenings formed by looping and tying a rope (or cord) upon itself or to another rope or to another object

• a hard cross-grained round piece of wood in a board where a branch emerged

• (of ships and wind) a unit of speed equal to one nautical mile per hour or about 1.15 statute miles per hour

• something twisted and tight and swollen

• soft lump or unevenness in a yarn; either an imperfection or created by design

• a sandpiper that breeds in the Arctic and winters in the Southern Hemisphere

verb

• make into knots; make knots out of

• tie or fasten into a knot

• tangle or complicate

36%7 Presents a problem that is hard to solve
noun

• a flat plate that controls or directs the flow of fluid or energy

verb

• be a mystery or bewildering to

• hinder or prevent (the efforts, plans, or desires) of

• restrain the emission of (sound, fluid, etc.)

29%15 Method in complexity theory to show that a problem is at least as hard as another problem
noun

• changing a square matrix to diagonal form (with all non-zero elements on the principal diagonal)

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Clue Last Found In...

Source #Number Answer
New York Times16 Dec 2017 Across 42
This clue was last seen in the publications above.

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