ἀρήιος

From LSJ

Ἀναξαγόρας δύο ἔλεγε διδασκαλίας εἶναι θανάτου, τόν τε πρὸ τοῦ γενέσθαι χρόνον καὶ τὸν ὕπνονAnaxagoras used to say that we have two teachers for death: the time before we were born and sleep | Anaxagoras said that there are two rehearsals for death: the time before being born and sleep

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)