уверенный

From LSJ

ἐβόα καὶ βαρβαρικῶς καὶ Ἑλληνικῶς → shouted out both in Persian and Greek, shouted out in the barbarian tongue and in Greek

Source

Russian > Greek

πιστός, ἀτρεκής, βέβαιος, ἀπτώς, θαρσαλέος, θαρραλέος