Back outspoken comic writer (6)
I believe the answer is:
sterne
'writer' is the definition.
(I've seen this before)
'back outspoken comic' is the wordplay.
'back' becomes 'stern' (stern is a kind of back).
'outspoken comic' becomes 'e' (I can't explain this - if you can you should give a lot more credence to this answer).
'stern'+'e'='STERNE'
Can you help me to learn more?
(Other definitions for sterne that I've seen before include "Writer" , "Laurence ..., author of 'Tristram Shandy'" , "Laurence ---, novelist; sounds hard" , "Author of Tristram Shandy, d. 1768" , "Irish-born novelist (A Sentimental Journey)" .)