Mean, spiteful (5)
I believe the answer is:
nasty
<span class="explanation-format__ClueExplanation">I believe this is a double definition.<br/ ><br/ >'<span class="explanation-format__original">mean</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(similar in meaning)</span><br/ ><br/ >'<span class="explanation-format__original">spiteful</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(similar in meaning)</span><br/ ><br/ ></span>
(Other definitions for nasty that I've seen before include "Horrible" , "One who sees the future" , "Foul" , "grave" , "Not nice" .)