Good and saucy, but still plagiarism (6)
I believe the answer is:
piracy
'still plagiarism' is the definition.
'piracy' can be an answer for 'plagiarism' (I've seen this before). I'm not sure about the 'still' bit.
'good and saucy' is the wordplay.
'good' becomes 'pi' (I've seen this in other clues).
'and' is a charade indicator (letters next to each other).
'saucy' becomes 'racy' (I can't explain this - if you can you should give a lot more credence to this answer).
'pi'+'racy'='PIRACY'
'but' acts as a link.
Can you help me to learn more?
(Other definitions for piracy that I've seen before include "theft" , "Maritime or commercial robbery" , "burglary, in the main?" , "Robbery on the high seas" , "Robbery at sea or of copyright" .)