Not real or genuine (6)
I believe the answer is:
ersatz
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">not real or genuine</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for ersatz that I've seen before include "Artificial or synthetic, from German" , "Substitute - fake" , "Inferior substitute" , "Made in imitation, from German" , "unnatural" .)