ретивый

From LSJ

ἄλλαι μὲν βουλαὶ ἀνθρώπων, ἄλλα δὲ Θεὸς κελεύει → man proposes, God disposes | men's wishes are different from what God orders | man's will is often different than God's decisions

Source

Russian > Greek

εὐκάρδιος, σχέτλιος, θυμικός, ὑπέρθυμος, σοβαρός