ἀρχηγετέω
From LSJ
Περὶ τοῦ ἐπέκεινα τοῦ νοῦ κατὰ μὲν νόησιν πολλὰ λέγεται, θεωρεῖται δὲ ἀνοησίᾳ κρείττονι νοήσεως → On the subject of that which is beyond intellect, many statements are made on the basis of intellection, but it may be immediately cognised only by means of a non-intellection superior to intellection
English (LSJ)
A make a beginning, ἀπὸ τῶνδε S.El.83.
German (Pape)
[Seite 365] anfangen, ἀπό τινος Soph. El. 83.