Absent, away (3)
I believe the answer is:
off
This clue is a double definition.
'absent' is the first definition.
(I've seen this in other clues)
'away' is the second definition.
(I know that away can be written as off)
(Other definitions for off that I've seen before include "below par" , "Away, or beginning to decay" , "start to race" , "Away, or no longer on the menu perhaps" , "Discontinued" .)