Hit father over causing outrages (6)
I believe the answer is:
appals
'outrages' is the definition.
(I know this)
'hit father over' is the wordplay.
'hit' becomes 'slap' (both can mean to strike).
'father' becomes 'pa' (pa can mean dad or father).
'over' is a reversal indicator.
'slap'+'pa'='slappa'
'slappa' reversed gives 'APPALS'.
'causing' acts as a link.
(Other definitions for appals that I've seen before include "Shocks" , "Fills with disgust" , "'Horrifies, outrages (6)'" , "Fills with dismay or horror (6)" .)