αὐχεῖν
From LSJ
Πρόσεχε τῷ ὑποκειμένῳ ἢ τῇ ἐνεργείᾳ ἢ τῷ δόγματι ἢ τῷ σημαινομένῳ. → Look to the essence of a thing, whether it be a point of doctrine, of practice, or of interpretation.
Greek > English (Woodhouse Verbs Reversed)
(see also αὐχέω): assert, boast, declare, assert confidently, be confident
