Indisputable statement (4)
I believe the answer is:
fact
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">indisputable statement</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for fact that I've seen before include "Piece of information known to be true" , "given" , "Not fake news!" , "An indisputable truth" , "Item of truth" .)