Turn up again (8)
I believe the answer is:
reappear
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">turn up again</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 reappear that I've seen before include "return" , "Turn up again" , "Show over" , "crop up again" , "spring up again?" .)