8 down
Agent
revealed
–
around
lunchtime?
–
possible
reason
for
lack
of
appetite
(9)
Agent revealed – around lunchtime? – possible reason for lack of appetite (9)
hints
0
checks
0
hints
The definition is at the end of the clue.
How the clue works
Look at possible reason for lack of appetite — that's your definition, being full up. The wordplay builds from REP (agent) and LET ON (revealed), but before you put them together, you tuck I inside LET ON — because one o'clock is lunchtime, and I is the Roman numeral for one, giving you LET-I-ON. String REP onto the front of that and you've got it.