Give sanction to (7)
I believe the answer is:
endorse
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">give sanction to</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for endorse that I've seen before include "Champion" , "Give one's sanction to" , "Put penalty points on (a driving licence)" , "Docket" , "Countersign" .)