Two things swindlers do give offence in court (8)
I believe the answer is:
contempt
'offence in court' is the definition.
(as in contempt of court)
'two things swindlers do' is the wordplay.
I cannot really see how this works, but
'do' could be 'con' (both can mean to defraud) and 'con' is found within the answer.
The remaining letters 'tempt' is a valid word which might be clued in a way I don't see.
This explanation may well be incorrect...
'give' is the link.
Can you help me to learn more?
(Other definitions for contempt that I've seen before include "Disobedience to the rule of court of law" , "Disdain, scorn" , "Scornful feeling" , "The feeling of despising a person" , "ridicule" .)