Existing in fact (6)
I believe the answer is:
actual
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">existing in fact</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 actual that I've seen before include "Real, genuine" , "Real - true" , "Really existing" , "Real, existing in fact" , "Real, not illusory" .)