Dupe having stolen goods picked up (4)
I believe the answer is:
tool
'dupe' is the definition.
(thesaurus)
'stolen goods picked up' is the wordplay.
'stolen goods' becomes 'loot' (items which have been looted).
'picked up' shows that the letters should be reversed in order.
'loot' written backwards gives 'TOOL'.
'having' is the link.
(Other definitions for tool that I've seen before include "one of 12 [SPADES] , for example" , "Person exploited" , "Instrument, implement" , "Weapon" , "Device, implement" .)