Be alive (5)
I believe the answer is:
exist
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">be alive</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 exist that I've seen before include "Get a life!" , "Have objective reality" , "Survive" , "Be alive" , "Subsist" .)