ἀμβλέως
From LSJ
τὰ πρὸ Εὐκλείδου ἐξετάζειν → investigate what happened before the flood, investigate what happened in the distant past, investigate what happened before Euclid, investigate what happened before the year of Euclid
Russian (Dvoretsky)
ἀμβλέως: слабо, неясно: κατ᾽ ἀρχὰς μὲν ἀκριβέστερον, τελευτῶν δὲ ἀμβλύτερον Plat. вначале с большей, а в конце с меньшей точностью.