τὴν οἴησιν ἔλεγε προκοπῆς ἐγκοπήν → he used to say, Opinion forming is the stoppage of progress
P. and V. ἄκρα, ἡ, P. ἀκρωτήριον, τό, V. ἀκτή, ἡ, πρών, ὁ, Ar. and V. ἄκρον, τό, προβλής, ὁ.