Stop living (3)
I believe the answer is:
die
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">stop living</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 die that I've seen before include "Fail" , "Cease living" , "one proverbially straight" , "a block?" , "Pass away" .)