Ascendancy (9)
I believe the answer is:
dominance
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">ascendancy</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I know that ascendancy can be written as dominance)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for dominance that I've seen before include "Mastery" , "Commanding position" , "Influence (over others)" , "Supremacy" , "Power (over others)" .)