μυρίῳ
From LSJ
οὐ γὰρ ἂν τό γε πραχθὲν ἀγένητον θείη → since he cannot make what was done as though it had not come to pass
Russian (Dvoretsky)
μῡρίῳ: adv.
1) во много раз, гораздо (σοφώτεροι Eur.; βέλτιον Plat.);
2) бесконечно, чрезвычайно (διαφέρειν Plat.).
