Win through (7)
I believe the answer is:
prevail
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">win through</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for prevail that I've seen before include "Be victorious" , "Have opinion accepted" , "get the upper hand" , "Gain mastery" , "Successfully persuade" .)