Crossword Genius

See uncle about a dirty trick! (4)

Ross

I believe the answer is:

scam

I'm a little stuck... Click here to teach me more about this clue!

'a dirty trick' is the definition.
'scam' can be an answer for 'trick' (I've seen this in other clues). I am unsure of the 'a dirty' bit.

'see uncle about' is the wordplay.
'see' becomes 'C' (the word for the letter, according to Chambers).
'uncle' becomes 'sam' (Uncle Sam is an example).
'about' is an insertion indicator.
'c' placed into 'sam' is 'SCAM'.

Can you help me to learn more?

(Other definitions for scam that I've seen before include "Racket" , "Screw" , "Swindle (Slang)" , "Fraudulent scheme, swindle" , "An informal swindle" .)

I've seen this clue in the Evening Standard.
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