A rebirth, with prisoner released from loathing (8)
I believe the answer is:
aversion
'loathing' is the definition.
(I've seen this in another clue)
'a rebirth with prisoner released from' is the wordplay.
I cannot really understand how this works, but
'a' is within the answer.
'from' could be 'o' (I've seen this in other clues) and 'o' is found in the answer.
The remaining letters 'versin' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...
(Other definitions for aversion that I've seen before include "A version of strong dislike" , "phobia" , "an object of dislike" , "A strong dislike or repugnance" , "distaste" .)