Give authority to (7)
I believe the answer is:
empower
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">give authority to</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 empower that I've seen before include "Authorize" , "Give strength and confidence to" , "Give authority to, enable" , "Give authority to, authorise" , "Authorise, endue" .)