unrevenged
/(ˌ)ʌnrɪˈvɛn(d)ʒd/originally Scottish
adjective
1Of an injured person, injury, wrong, etc.: not avenged.
2Without incurring revenge or punishment; not subject to vengeance. Now rare.
Origin
Early 16th century; earliest use found in Alexander Barclay (c1484–1552), poet and clergyman. From un- + revenge + -ed.