UNTURNED
unturned
(adjective) not turned; “left no stone unturned”
Source: WordNet® 3.1
Etymology
Adjective
unturned (not generally comparable, comparative more unturned, superlative most unturned)
Not turned.
Source: Wiktionary
Un*turned", a. Etym: [Pref. un- + turned.]
Definition: 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.
UNTURN
Un*turn", v. t. Etym: [1st pref. un- + turn.]
Definition: To turn in a reserve way, especially so as to open something;
as, to unturn a key. Keats.
Source: Webster’s Unabridged Dictionary 1913 Edition