Absentee (6)
I believe the answer is:
truant
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">absentee</span>' is the definition.<br/ ><span class="explanation-format__explanation">(truant is a kind of absentee)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for truant that I've seen before include "Child bunking off school" , "One is absent from school without permission" , "Wandering" , "One playing hooky" , "Inexcusably absent" .)