More agreeable (5)
I believe the answer is:
nicer
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">more agreeable</span>' is the definition.<br/ ><span class="explanation-format__explanation">(nice can mean agreeable)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for nicer that I've seen before include "it's more appealing" , "better" , "more lovely" , "More pleasant or fine" , "Pleasanter" .)