Accept as true (7)
I believe the answer is:
believe
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">accept as true</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 believe that I've seen before include "Accept as true" , "Live bee (anag)" , "Credit; accept" , "Have faith; understand" , "Keep the faith" .)