tied up - definition and synonyms

adjective 

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  1. 1
    if someone is tied up, they are very busy
     Synonyms and related words
  2. 2
    if your money is tied up in something, it is being used for that thing and you cannot use it for anything else

    A lot of their money is tied up in property.

  3. 3
    American if traffic is tied up, it is not moving very quickly