самоуверенный

From LSJ

μὴ πόνει, ὦ Ξάνθια, ἀλλὰ ἔλθε δεῦρο → Don't keep suffering, Xanthias, but come here.

Source

Russian > Greek

πολυθαρσής, εὔελπις, θάρσυνος, αὐθάδης