Misconception (8)
I believe the answer is:
delusion
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">misconception</span>' is the definition.<br/ ><span class="explanation-format__explanation">(delusion is a kind of misconception)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for delusion that I've seen before include "False or mistaken belief" , "False impression" , "Fallacy" , "Misconception - deception" , "Belief contradicted by reality" .)