Incredulity (9)
I believe the answer is:
disbelief
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">incredulity</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I know that incredulity can be written as disbelief)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for disbelief that I've seen before include "Incredulity" , "having exhausted trust fund?" , "Refusal to advance credit" , "Lack of faith" .)