Cheats some relations, I hear (6)
I believe the answer is:
cozens
'cheats' is the definition.
(cozening is a kind of cheating)
'some relations i hear' is the wordplay.
I cannot quite understand how this works, but
'relations' could be 'ns' (N is an example) and 'ns' is found in the answer.
The remaining letters 'coze' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...
Can you help me to learn more?
(Another definition for cozens that I've seen is " Tricks".)