Retainer (7)
I believe the answer is:
servant
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">retainer</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I know that retainer can be written as servant)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for servant that I've seen before include "Eg, a footman or maid" , "Domestic - valet" , "Domestic help" , "Perhaps help" , "Vest ran (anag)" .)