εὐθύνης

From LSJ

ἔνδον γὰρ ἁνὴρ ἄρτι τυγχάνει, κάρα στάζων ἱδρῶτι καὶ χέρας ξιφοκτόνους → yes, the man is now inside, his face and hands that have slaughtered with the sword dripping with sweat

Source

Russian (Dvoretsky)

εὐθύνης: ου ὁ Arst. = εὔθυνος.

German (Pape)

[ῡ], ὁ, = εὔθυνος, Vetera Lexica aus Lys.