Be real
I believe the answer is:
exist
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">be real</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for exist that I've seen before include "Have objective reality" , "Subsist" , "Have being or continue living" , "Scrape by" , "Live" .)