Untwist /(?)/

Un·twist

Untwist

v. t.
  1. To separate and open, as twisted threads; to turn back, as that which is twisted; to untwine.
    If one of the twines of the twist do untwist, The twine that untwisteth, untwisteth the twist.
    — Wallis.
  2. To untie; to open; to disentangle.