More docile (5)
I believe the answer is:
tamer
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">more docile</span>' is the definition.<br/ ><span class="explanation-format__explanation">('tame' can be similar in meaning to 'docile')</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for tamer that I've seen before include "less offensive?" , "Less arousing, exciting" , "Animal trainer" , "Less wild" .)