untie

verb5

1. •
   To loosen, as something interlaced or knotted; to disengage the parts of.

   • Sacharissa's captive fain / Would untie his iron chain. — 1645
2. •
   To free from fastening or from restraint; to let loose; to unbind.

   • Though you untie the winds, and let them fight / Against the churches. — 1606
3. •
   To become untied or loosed.
4. •
   To resolve; to unfold; to clear.

   • They quicken sloth, perplexities untie. — 1668
5. •
   In the Perl programming language, to undo the process of tying, so that a variable uses default instead of custom functionality.

   • After you finish with the INI file, all you need to do is untie the hash. Then you really are finished! — 2002