encumber - definition and synonyms

verb [transitive] formal 

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present tense
present participleencumbering
past tenseencumbered
past participleencumbered
  1. 1
    if something large, heavy, tight etc encumbers you, it prevents you from moving normally
    be encumbered by/with something:

    They were encumbered with heavy suitcases and could not run.

  2. 2
    to make it more difficult for someone to do something or for something to develop