More clever (7)
I believe the answer is:
smarter
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">more clever</span>' is the definition.<br/ ><span class="explanation-format__explanation">('smart' can be similar in meaning to 'clever')</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for smarter that I've seen before include "More stylish" , "Neater, tidier" .)