Meaner (7)
I believe the answer is:
nastier
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">meaner</span>' is the definition.<br/ ><span class="explanation-format__explanation">('nasty' can be similar in meaning to 'mean')</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for nastier that I've seen before include "Getting even worse" , "Retsina (anag) -- not so nice" , "More horrid" , "More damaging" , "more awkward" .)