Claim without proof (6)
I believe the answer is:
allege
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">claim without proof</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for allege that I've seen before include "Declare without absolute proof" , "Assert, state without proof" , "Accuse without established proof" , "State as a fact without proof" , "Swear" .)