Antonym: unknot. Similar words: know, known, knob, knock, unknown, known as, knoll, know about. Meaning: [nɑt /nɒt] 
n. 1. a tight cluster of people or things 2. any of various fastenings formed by looping and tying a rope (or cord) upon itself or to another rope or to another object 3. a hard cross-grained round piece of wood in a board where a branch emerged 4. something twisted and tight and swollen 5. a unit of length used in navigation; equivalent to the distance spanned by one minute of arc in latitude; 1,852 meters 6. soft lump or unevenness in a yarn; either an imperfection or created by design 7. a sandpiper that breeds in the arctic and winters in the southern hemisphere. v. 1. make into knots; make knots out of 2. tie or fasten into a knot 3. tangle or complicate.
n. 1. a tight cluster of people or things 2. any of various fastenings formed by looping and tying a rope (or cord) upon itself or to another rope or to another object 3. a hard cross-grained round piece of wood in a board where a branch emerged 4. something twisted and tight and swollen 5. a unit of length used in navigation; equivalent to the distance spanned by one minute of arc in latitude; 1,852 meters 6. soft lump or unevenness in a yarn; either an imperfection or created by design 7. a sandpiper that breeds in the arctic and winters in the southern hemisphere. v. 1. make into knots; make knots out of 2. tie or fasten into a knot 3. tangle or complicate. 
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1. Where the knot is loose the string slips. 
2. Tie the knot as tight as you can.
3. Tie the two ropes together with a secure knot.
4. Make a knot at the end of the string.
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5. Can you undo this knot?
6. She twisted her hair into a tight knot.
7. I can't untie the knot - it's too tight.
8. He made a knot in the rope.
9. Tie a knot in the rope.
10. He tied the two ropes together with a knot.
11. A knot of people stood talking outside the door.
12. Tie a knot to join those two pieces of rope.
13. Something is a knot when you reserve it,a scar when it's opened.
14. After several attempts to untie the knot, I admitted defeat and cut through it with a knife.
15. I wish you to tie the knot, a harmonious union lasting a hundred years! A happy newlywed, sweet sweet honey!
16. Her hair was twisted into a knot on top of her head.
17. There's a knot in the string.
18. She tied the ribbon tightly in a bow/knot.
19. A knot sometimes forms in a tired muscle.
20. My dead fingers could not untie the knot.
21. I tied a knot in the rope.
22. Her nimble fingers undid the knot in seconds.
23. You should cut the knot by firing them all.
24. There's a knot in the yarn.
25. There's a knot in my shoelace.
26. His clumsy fingers couldn't untie the knot.
27. She tied a knot in her scarf.
28. I felt my stomach knot with apprehension.
29. Loop that end of the rope through this and knot it.
30. One lace had broken and been tied in a knot.
More similar words: know, known, knob, knock, unknown, known as, knoll, know about, well known, knock out, knock off, well-known, knock down, for all I know, doorknob, knowledge, gordian knot, unknowingly, acknowledge, hard knocks, acknowledgement.