Bored FBI agent, dupe at heart? (3,2)
I believe the answer is:
fed up
'bored' is the definition.
(I've seen this before)
'fbi agent dupe at heart?' is the wordplay.
'fbi agent' becomes 'fed'.
'at heart?' means to look at the middle letters (I've seen 'at heart' mean this).
The centre of 'dupe' is 'up'.
'fed'+'up'='FED UP'
(Other definitions for fed up that I've seen before include "Bored, finding life tedious" , "Depressed" , "Bored and angry" , "Surfeited" , "Catered for on flight" .)