Casualty, sufferer (6)
I believe the answer is:
victim
I believe this clue is a double definition.
'casualty' is the first definition.
(both can mean someone injured or killed)
'sufferer' is the second definition.
(I've seen this before)
(Other definitions for victim that I've seen before include "Person who has suffered" , "Injured person; dupe" , "Casualty of a crime" , "One affected by crime" , "One harmed by crime" .)