unavenged
/ʌnˈævɛndʒd/Definitions
1. adjective
not avenged or punished
“The murderer was brought to justice and the victim’s family finally found closure, thus bringing the unavenged tragedy to an end.”
2. noun
a person or thing that has not been avenged or punished
“The unavenged souls of the victims continue to haunt the community to this day.”