Completely fill, as a hungry person (4)
I believe the answer is:
sate
'completely fill as a hungry person' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for sate that I've seen before include "Overfill, gorge" , "Provide with more than enough" , "Fill to repletion" , "Glut" , "Fill totally" .)