Genial or kindly (6)
I believe the answer is:
benign
<span class="explanation-format__ClueExplanation">This clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">genial</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(similar in meaning)</span><br/ ><br/ >'<span class="explanation-format__original">kindly</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ ></span>
(Other definitions for benign that I've seen before include "Liberal" , "Favourable" , "Obliging" , "Harmless or kind" , "Medically curable" .)