Harm, injury (6)
I believe the answer is:
damage
This clue is a double definition.
'harm' is the first definition.
(synonyms)
'injury' is the second definition.
(I've seen this in another clue)
(Other definitions for damage that I've seen before include "Impairment, injury" , "Injure, spoil" , "To vandalise" , "Cost (slang)" , "Mar" .)