δ351Δεινοί
clever (ones), terrible (ones)
[Meaning] formidable, experienced, wise. "Therefore both swore all the oaths which both are and are called most/very terrible among Christians, never to abandon each other even unto dangers which lead to death."
Δεινοί· φοβεροί, ἔμπειροι, σοφοί. διὸ ἄμφω ἅπαντες ἀλλήλοιν ὠμοσάτην, ὅσοι δὴ ἐν Χριστιανοῖς δεινότατοι ὅρκοι εἰσί τε καὶ ὀνομάζονται, μή ποτε ἀλλήλω καταπροήσεσθαι ἄχρι τῶν ἐς…