Retains (5)
I believe the answer is:
keeps
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">retains</span>' is the definition.<br/ ><span class="explanation-format__explanation">('keep' can be a synonym of 'retain')</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for keeps that I've seen before include "Stores" , "Retains" .)