ἄεικτος

From LSJ

ἀλλ' ἐσθ' ὁ θάνατος λοῖσθος ἰατρός κακῶν → but death is the ultimate healer of ills

Source

Spanish (DGE)

-ον
inflexible, obstinado subst. τὸ ἀτενὲς καὶ ἄ. Anon.V.Thecl.12.14.