Writing seen after university rebelled (6)
I believe the answer is:
uprose
'rebelled' is the definition.
(I've seen this in another clue)
'writing seen after university' is the wordplay.
'writing' becomes 'prose' (prose is ordinary writing as opposed to poetry).
'seen after' says to put letters next to each other.
'university' becomes 'U' (abbreviation for university).
'prose' after 'u' is 'UPROSE'.
(Other definitions for uprose that I've seen before include "Revolted" , "elevated?" .)