ἐπιλανθάνεσθαι

From LSJ

τὴν οἴησιν ἔλεγε προκοπῆς ἐγκοπήν → he used to say, Opinion forming is the stoppage of progress

Source

Greek > English (Woodhouse Verbs Reversed)

(see also ἐπιλανθάνομαι): forget to, forget