Pugilist (5)
I believe the answer is:
boxer
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">pugilist</span>' is the definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for boxer that I've seen before include "Pug - dog" , "Asian rebel" , "one that's accustomed to fighting" , "Prizefighter" , "Pugilist - dog" .)