Disclaim (4)
I believe the answer is:
deny
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">disclaim</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for deny that I've seen before include "Refuse to accept" , "Reject as true" , "Refuse to give" , "Abnegate" , "Declare non-existent" .)