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From LSJ

Τί κοινότατον; ἐλπίς. καὶ γὰρ οἷς ἄλλο μηδέν, αὕτη πάρεστι → What is most common? Hope. For those who have nothing else, that is always there.

Source

Russian > Greek

μονομαχία, μουνομαχίη, μονομάχιον, μοναθλία