Most kind (6)
I believe the answer is:
nicest
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">most kind</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for nicest that I've seen before include "I scent in the most pleasant way" , "Best" , "Sin etc (anag)" , "Most pleasing" , "Most attractive" .)