Untested (7)
I believe the answer is:
untried
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">untested</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I know that untested can be written as untried)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for untried that I've seen before include "inexperienced" , "Not yet experienced" , "escape court appearance thus" , "virgin" , "not yet proved reliable" .)