ἀρήιος

From LSJ

οὐ γὰρ ἂν τό γε πραχθὲν ἀγένητον θείη → since he cannot make what was done as though it had not come to pass

Source

English (Autenrieth)

(Ἄρης): martial, warlike; of men, Μενέλᾶος, Αἴᾶς, υἶες Ἀχαιῶν, etc.; also of weapons and armor (τεύχεα, ἔντεα); τεῖχος ἄρειον, ‘martialwall, Il. 4.407, Il. 15.736.

English (Slater)

ᾰρήιος warlike Ἐρινὺς ἔπεφνέ οἱ γένος ἀρήιον i. e. the family of Oidipous (O. 2.42)