περιοπτέος
From LSJ
ὁποία δ' ἦν αὕτη ἡ παίδευσις δύναταί τις γιγνώσκειν διάλογόν τινα τοῦ Πλάτωνος σκοπῶν → It's possible to find out what kind of education that was by examining one of Plato's dialogues
English (LSJ)
α, ον, (περιοράω)
A to be overlooked or suffered, c. part., οὔ σφι π. Ἑλλὰς ἀπολλυμένη Hdt.7.168 ; ἡμῖν τοῦτό ἐστι οὐ π., γένος τὸ Εὐρυσθένεος γενέσθαι ἐξίτηλον Id.5.39. 2 to be watched or guarded against, Th.8.48. II περιοπτέον one must overlook or suffer, X. Lac.9.5, Agath.3.10.