Writing with Sexy Sue (9)
I believe the answer is:
prosecute
'sue' is the definition.
(I've seen this before)
'writing with sexy' is the wordplay.
'writing' becomes 'prose' (prose is ordinary writing as opposed to poetry).
'with sexy' becomes 'cute' (I can't justify this - if you can you should believe this answer much more).
'prose'+'cute'='PROSECUTE'
Can you help me to learn more?
(Other definitions for prosecute that I've seen before include "Take legal action" , "Carry out assessment" , "Pursue" , "Bring before a criminal court" , "Practise" .)