Not risen (4)
I believe the answer is:
abed
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">not risen</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 abed that I've seen before include "how we all hope to go?" , "Bead (anag.)" , "Sleeping under covers" , "Retired for the night" , "in his hammock awaiting Santa?" .)