Detested, loathed (8)
I believe the answer is:
abhorred
<span class="explanation-format__ClueExplanation">This clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">detested</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(abhorring is a kind of detesting)</span><br/ ><br/ >'<span class="explanation-format__original">loathed</span>' is the second definition.<br/ ><span class="explanation-format__explanation">('abhor' can be a synonym of 'loathe')</span><br/ ><br/ ></span>
(Other definitions for abhorred that I've seen before include "Detested, loathed" , "Really detested" , "Drab hero being loathed" , "very unpopular" , "Hated" .)