μυρίῳ
From LSJ
Ὁ αὐτὸς ἔφησε τὸν μὲν ὕπνον ὀλιγοχρόνιον θάνατον, τὸν δὲ θάνατον πολυχρόνιον ὕπνον → Plato said that sleep was a short-lived death but death was a long-lived sleep
Russian (Dvoretsky)
μῡρίῳ: adv.
1 во много раз, гораздо (σοφώτεροι Eur.; βέλτιον Plat.);
2 бесконечно, чрезвычайно (διαφέρειν Plat.).