Pluckily (6)
I believe the answer is:
gamely
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">pluckily</span>' is the definition.<br/ ><span class="explanation-format__explanation">(thesaurus)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for gamely that I've seen before include "In a ready and willing manner" , "Bravely - sounds sporting" , "In a plucky manner" .)