Refractoriness (13)
I believe the answer is:
recalcitrance
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">refractoriness</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I know that refractoriness can be written as recalcitrance)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for recalcitrance that I've seen before include "Obstinacy" , "Strong objection or opposition" , "Wilfulness" , "stubborn opposition" .)