бесстрашный
From LSJ
ἀπορράπτειν τὸ Φιλίππου στόμα ὁλοσχοίνῳ ἀβρόχῳ → sew up Philip's mouth with an unsoaked rush, stop Philip's mouth with an unsoaked rush, shut one's mouth without any trouble
ἀδεής, ἀδδεής, ἀδειής, ἀταρβής, ἄτρομος, εὐθαρσής, θρασύσπλαγχνος, ἄτρεστος, ἄφοβος, ἀθαμβής, μενέγχης