Temporary deputy (5)
I believe the answer is:
locum
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">temporary deputy</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 locum that I've seen before include "Someone standing in temporarily for another of the same profession" , "Relief doctor" , "Professional temp" , "Stand-in medic" , "A substitute or stand-in doctor" .)