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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31. I can't get this knot undone.
32. Will you knot the rope round the post?
33. She had her hair in a loose knot.
34. A knot of politicians manufactured public opinion.
34. Sentencedict.com is a sentence dictionary, on which you can find good sentences for a large number of words.
35. She twisted her handkerchief into a knot.
36. Len tied the knot with Kate five years ago.
37. There was a knot of tension in his stomach.
38. Slack the rope before trying to untie the knot.
39. The knot was fastened in such a way that it was impossible to undo.
40. Her black hair was twisted up into a knot on top of her head.
41. He took a short length of rope and swiftly tied a slip knot.
42. She wore a checked shirt tied in a knot above the navel.
43. In recent years(Sentencedict.com), governments have tried to cut the Gordian knot by imposing cuts in state support to the railways.
44. She tied her hair in a knot at the back of her head.
45. He began to worry at the knot in the cord.
46. He was good with his hands and could unravel a knot or untangle yarn that others wouldn't even attempt.
47. He tried to undo the knot by picking at it with his fingers.
48. So when are you two going to tie the knot?
49. You need a sharp knife to cut through the knot.
50. I could feel a knot of fear in my throat.
51. I got a sick feeling/a knot in the pit of my stomach when the news of the attack was announced.
52. He loosened the tight knot round his throat.
53. She shuddered, and the knot in her stomach tightened.
54. Millennium marriage Thinking of tying the knot?
55. The priests were shepherded into a little knot.
56. Tathir emerged from a knot of players.
57. The knot of footsteps spread thinner into distance. Into silence.
58. When you're at the end of your rope, tie a knot and hold on. Theodore Roosevelt 
59. She hurriedly tidied her hair, pulling it back until it hurt and securing the tight knot with pins.
60. If Gorbachev expects to untie the Gordian knot, he has over-estimated his powers.
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.