Showing opposition (7)
I believe the answer is:
hostile
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">showing opposition</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for hostile that I've seen before include "harsh" , "malevolent" , "Enemy" , "Showing angry opposition" , "Bellicose" .)