Puzzle scam uncovered (8)

I believe the answer is:

confound

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'puzzle' is the definition.
('confound' can be a synonym of 'puzzle')

'scam uncovered' is the wordplay.
'scam' becomes 'con' (I've seen this before).
'uncovered' becomes 'found' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'con'+'found'='CONFOUND'

Can you help me to learn more?

(Other definitions for confound that I've seen before include "Puzzle" , "Surprise, confuse" , "Befuddle, confuse" , "Astonish and confuse" , "floor" .)

I've seen this clue in The Telegraph.

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