Swindles the no-goods fare badly in (8)
I believe the answer is:
defrauds
'swindles' is the definition.
('defraud' can be a synonym of 'swindle')
'no-goods fare badly in' is the wordplay.
'no goods' becomes 'duds' (duds is a kind of goods. I am not sure about the 'no' bit.).
'badly' indicates anagramming the letters (letters in the wrong order).
'in' means one lot of letters goes inside another.
'fare' is an anagram of 'efra'.
'duds' enclosing 'efra' is 'DEFRAUDS'.
'the' acts as a link.
Can you help me to learn more?
(Another definition for defrauds that I've seen is " Deprives of by deceit".)