More simple (6)
I believe the answer is:
easier
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">more simple</span>' is the definition.<br/ ><span class="explanation-format__explanation">('easy' is associated in meaning with 'simple')</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for easier that I've seen before include "More effortless" , "Less complicated" , "Simpler" , "More comfortable or less difficult" , "More facile" .)