Felt gutted after the robbery (5)
I believe the answer is:
theft
'robbery' is the definition.
(I've seen this in another clue)
'felt gutted after the' is the wordplay.
'gutted' suggests removing the centre (to gut something is to remove its insides).
'after' means one lot of letters go next to another.
'felt' with its middle removed is 'ft'.
'ft' after 'the' is 'THEFT'.
(Other definitions for theft that I've seen before include "Taking offence?" , "Crime of stealing" , "Action of stealing" , "Wrongly taking" , "Pilferage" .)