Administer (5)
I believe the answer is:
apply
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">administer</span>' is the definition.<br/ ><span class="explanation-format__explanation">(applying is a kind of administering)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for apply that I've seen before include "Use - ask (for)" , "Be relevant - seek job" , "Sue" , "Put (eg, paint) on" , "Ask for, a position perhaps" .)