ἀπρήϋντος
From LSJ
ἰὼ, σκότος, ἐμὸν φάος, ἔρεβος ὦ φαεννότατον, ὡς ἐμοί, ἕλεσθ' ἕλεσθέ μ' οἰκήτορα → ah, darkness that is my light, gloom that is most bright for me, take me, take me to dwell in you
English (LSJ)
ον,
A implacable, AP7.287 (Antip.), Nonn.D.28.1, al.
German (Pape)
[Seite 338] ep. = ἀπράϋντος, nicht zu beschwichtigen, grausam, θάλασσα Ant. Th. 69 (VII, 287).
Greek (Liddell-Scott)
ἀπρήϋντος: -ον, Ἀττ. ἀπράϋντος, ἀδιάλλακτος, ἀνεξίλαστος, Ἀνθ. Π.7. 287.