Energy, determination (6)
I believe the answer is:
spirit
<span class="explanation-format__ClueExplanation">I believe this is a double definition.<br/ ><br/ >'<span class="explanation-format__original">energy</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >'<span class="explanation-format__original">determination</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ ></span>
(Other definitions for spirit that I've seen before include "Soul - ethos" , "Ghost or strong drink" , "Wraith" , "Animation or energy" , "Drink for a supernatural being" .)