Gives in to gravity (4)
I believe the answer is:
sags
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">gives in to gravity</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for sags that I've seen before include "Is dispirited" , "Droops" , "Slumps" .)