More just (6)
I believe the answer is:
fairer
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">more just</span>' is the definition.<br/ ><span class="explanation-format__explanation">('fair' is associated in meaning with 'just')</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for fairer that I've seen before include "More blond or equitable" , "lighter" , "Cleaner" , "Less inclined to show bias" , "Blonder" .)