Hurt, harm (6)
I believe the answer is:
damage
I believe this clue is a double definition.
'hurt' is the first definition.
(I know that hurt can be written as damage)
'harm' is the second definition.
(I know that harm can be written as damage)
(Other definitions for damage that I've seen before include "Cost (slang)" , "vandalism?" , "Impair and lower value" , "'Deface, impair (6)'" , "Deface, break" .)