Answer Joycean protagonist having come out (6)
I believe the answer is:
abloom
'out' is the definition.
(I've seen this before)
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for abloom that I've seen before include "no longer buddy of Rose?" , "Flourishing" , "In flower" , "full of colour" , "covered in flowers?" .)