UNTUNE
Un*tune", v. t. Etym: [1st pref. un- + tune.]
Defn: To make incapable of harmony, or of harmonious action; to put out of tune. Shak.
UNTURN
Un*turn", v. t. Etym: [1st pref. un- + turn.]
Defn: To turn in a reserve way, especially so as to open something; as, to unturn a key. Keats.
UNTURNED
Un*turned", a. Etym: [Pref. un- + turned.]
Defn: Not turned; not revolved or reversed. To leave no stone unturned, to leave nothing untried for accomplishing one's purpose. [He] left unturned no stone To make my guilt appear, and hide his own. Dryden.
UNTWAIN
Un*twain", v. t. Etym: [1st pref. un- + twain.]
Defn: To rend in twain; to tear in two. [Obs.] Skelton.
UNTWINE
Un*twine", v. t. Etym: [1st pref. un- + twine.]
Defn: To untwist; to separate, as that which is twined or twisted; to disentangle; to untie. It requires a long and powerful counter sympathy in a nation to untwine the ties of custom which bind a people to the established and the old. Sir W. Hamilton.