Pain does father no good (4)
I believe the answer is:
pang
'pain' is the definition.
(pang is a kind of pain)
'father no good' is the wordplay.
'father' becomes 'pa' (pa can mean dad or father).
'no good' becomes 'ng' (abbreviation).
'pa'+'ng'='PANG'
'does' acts as a link.
(Other definitions for pang that I've seen before include "A sudden sharp feeling" , "Stab of pain" , "Sudden feeling of hunger or pain" , "Sudden sharp pain" , "Short violent pain" .)