Insists upon (7)
I believe the answer is:
demands
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">insists upon</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 demands that I've seen before include "Asks peremptorily" , "Insists upon" , "Requires" , "Orders" , "Insistent requests" .)