αὐχεῖν
From LSJ
Εὐφήμει, ὦ ἄνθρωπε· ἁσμενέστατα μέντοι αὐτὸ ἀπέφυγον, ὥσπερ λυττῶντά τινα καὶ ἄγριον δεσπότην ἀποδράς → Hush, man, most gladly have I escaped this thing you talk of, as if I had run away from a raging and savage beast of a master
Greek > English (Woodhouse Verbs Reversed)
(see also αὐχέω): assert, boast, declare, assert confidently, be confident