Definition of tie up phrasal verb from the Oxford Advanced American Dictionary

 

tie up

 phrasal verb
phrasal verb
 
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Phrasal Verbs

    tie up

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    tie somethingup

     
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  1. 1 to attach a boat to a fixed object with a rope We tied up alongside the pier. We tied the boat up.
  2. 2to close something with a knot; to be closed or fastened with a knot to tie up a garbage bag

    tie somebodyup

     
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  1. 1to tie someone's arms and legs tightly so that they cannot move or escape The gang tied up a security guard.
  2. 2[usually passive] to keep someone busy so that they have no time for other things I'm tied up in a meeting until 3.

    tie somethingup

     
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  1. 1to attach an animal to something with a rope, chain, etc. He left his dog tied up to a tree.
  2. 2 [usually passive] to connect or link something to something else Her behavior is tied up with her feelings of guilt.
  3. 3[often passive] to invest money so that it is not easily available for use Most of the capital is tied up in property.
  4. 4to deal with all the remaining details of something We are hoping to tie up the deal by tomorrow. I went into the office for an hour to tie up any loose ends (= finish remaining small jobs).
See the Oxford Advanced Learner's Dictionary entry: tie up