Swindles one out of money (4)
I believe the answer is:
cons
'swindles' is the definition.
('con' can be a synonym of 'swindle')
'one out of money' is the wordplay.
I cannot quite understand how this works, but
'one' could be 'o' (I've seen this in other clues) and 'o' is found in the answer.
'money' could be 'c' and 'c' is located in the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for cons that I've seen before include "Swindles" , "Tricks" , "Arguments against" .)