Move downwards (7)
I believe the answer is:
descend
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">move downwards</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for descend that I've seen before include "Plunge" , "Alight" , "Go down" , "Climb down" , "Come down" .)