ἀσέληνος
From LSJ
ψυχῆς πείρατα ἰὼν οὐκ ἂν ἐξεύροιο πᾶσαν ἐπιπορευόμενος ὁδόν· οὕτω βαθὺν λόγον ἔχει → one would never discover the limits of soul, should one traverse every road—so deep a measure does it possess
English (LSJ)
ον,
A moonless, νύξ Th.3.22, cf. Plb.7.16.3, App.BC5.114.
German (Pape)
[Seite 369] νύξ, mondlos, finster, Anacr. 31, 12: Thuc. 3, 22; Pol. 7, 16, 3; Plut.