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Verb: untie (untied,untying,unties)  ,ún'tI
  1. Undo the ties of
    "They untied the prisoner";
    - unbrace, unlace
  2. Cause to become loose
    "untie the knot";
    - undo

Derived forms: untied, unties, untying

Type of: alter, change, modify, undo

Antonym: tie