More jolly (7)
I believe the answer is:
merrier
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">more jolly</span>' is the definition.<br/ ><span class="explanation-format__explanation">('merry' can be a synonym of 'jolly')</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for merrier that I've seen before include "more happy" , "More fun" , "probably after more" , "More jolly or drunk" , "more carefree" .)