ἐπιάχω
From LSJ
καὶ οὐκ ἐκδικᾶταί σου ἡ χείρ, καὶ οὐ μηνιεῖς τοῖς υἱοῖς τοῦ λαοῦ σου καὶ ἀγαπήσεις τὸν πλησίον σου ὡς σεαυτόν· ἐγώ εἰμι κύριος. Τὸν νόμον μου φυλάξεσθε → Let your hand not seek vengeance; do not show wrath toward the children of your people; love your neighbor as yourself. I am the Lord! Keep my Torah! (Leviticus 19:18f. LXX)
English (LSJ)
[ᾰ],
A shout out, shout applause after a speech, ὣς ἔφαθ'· οἱ δ' ἄρα πάντες ἐπίαχον Il.7.403. 2. shout, ὅσσον τ' ἐννεάχιλοι ἐπίαχον 5.860.
German (Pape)
[Seite 927] zurufen, zujauchzen, als Beifallsbezeugung, ἐπίαχον, μῦθον ἀγασσάμενοι Il. 9, 50, vgl. ἐπὶ δ' ἴαχε λαός 13, 822; übh. laut schreien, ὅσσον δ' ἐννεάχιλοι ἐπίαχον 14, 148; 5, 860; sp. D.