Missing person (8)
I believe the answer is:
absentee
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">missing person</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 absentee that I've seen before include "Deserter - truant b" , "Someone not present" , "shirker?" , "Missing person" , "One is not present when required" .)