Not up yet (4)
I believe the answer is:
abed
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">not up yet</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for abed that I've seen before include "Bead (anag.)" , "Lying between the sheets" , "Retired for the night" , "laid up" , "Sleeping under covers" .)