Full up (5)
I believe the answer is:
sated
'full up' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for sated that I've seen before include "given more than enough" , "Stuffed with food, too full" , "Stuffed, having had a surfeit" , "Fully satisfied" , "Stuffed with dates" .)