untie

v. remove, release, loosen

Verb
1. undo the ties of; "They untied the prisoner"
(synonym) unbrace, unlace
(antonym) tie, bind
(hypernym) undo
(hyponym) unloose, unloosen
(derivation) undoer, opener, unfastener, untier
2. cause to become loose; "undo the shoelace"; "untie the knot"; "loosen the necktie"
(synonym) undo, loosen
(hypernym) change, alter, modify
(derivation) undoer, opener, unfastener, untier

(v. t.)
To resolve; to unfold; to clear.
  

(v. t.)
To loosen, as something interlaced or knotted; to disengage the parts of; as, to untie a knot.
  

(v. t.)
To free from fastening or from restraint; to let loose; to unbind.
  

(v. i.)
To become untied or loosed.
  

unite

v. a.
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