Verve, swagger (7)
I believe the answer is:
panache
<span class="explanation-format__ClueExplanation">I believe this clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">verve</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >'<span class="explanation-format__original">swagger</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ ></span>
(Other definitions for panache that I've seen before include "Flamboyant sense of style" , "Swagger; theatricality" , "stylish carriage" , "'Dash, flair (7)'" , "flourish" .)