Contrariness (10)
I believe the answer is:
perversity
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">contrariness</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I know that contrariness can be written as perversity)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for perversity that I've seen before include "Wilfully contrary nature" , "Obstinacy" .)