Alleged reason for an advanced piece of writing? (7)
I believe the answer is:
pretext
'alleged reason' is the definition.
(I've seen this before)
'an advanced piece of writing?' is the wordplay.
'an advanced' becomes 'pre' (I can't explain this - if you can you should give a lot more credence to this answer).
'piece of writing?' becomes 'text' (I've seen this before).
'pre'+'text'='PRETEXT'
'for' acts as a link.
Can you help me to learn more?
(Other definitions for pretext that I've seen before include "Fictitious excuse" , "Ostensible motive" , "Ostensible reason" , "Alleged reason" , "Reason put forward to conceal the true one" .)