Drug agent from US contributing to anarchy (4)
I believe the answer is:
narc
'drug agent from us' is the definition.
Although both the answer and definition are singular nouns, I don't see how one could define the other.
'contributing to anarchy' is the wordplay.
'contributing to' indicates a hidden word.
'NARC' is hidden in the letters of 'anarchy'.
Can you help me to learn more?
(Other definitions for narc that I've seen before include "member of drug squad" , "Drugs officer" , "Agent dealing with Charlie" , "One on drugs squad" , "Drugs agent (US)" .)