Doubting (9)
I believe the answer is:
sceptical
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">doubting</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I know that doubting can be written as sceptical)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for sceptical that I've seen before include "Inclined not to believe" , "Inclined to doubt accepted opinions" , "Given to doubt" , "dubious" , "Disinclined to believe" .)