Pronounced fit, a murder victim! (4)
I believe the answer is:
abel
'murder victim' is the definition.
(Biblical character)
'pronounced fit a' is the wordplay.
I cannot really understand how this works, but
'a' is found in the answer.
The remaining letters 'bel' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for abel that I've seen before include "Cain's victim; - Magwitch (Great Expectations)" , "Cain's 11" , "Slain biblical brother" , "The first murderee?" , "Biblical murder victim" .)