Santa Claus (6,9)
I believe the answer is:
father christmas
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">santa claus</span>' is the definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for father christmas that I've seen before include "present supremo" , "Santa!" , "he'll be sacked" , "late December he's busy" , "man with gifts" .)