ἥσυχον

From LSJ

οὕτω τι βαθὺ καὶ μυστηριῶδες ἡ σιγὴ καὶ νηφάλιον, ἡ δὲ μέθη λάλον → silence is something profound and mysterious and sober, but drunkenness chatters

Source

Russian (Dvoretsky)

ἥσῠχον:
I τό спокойствие, кротость Thuc.: ἐν ἡσύχῳ Soph. спокойно.
дор. - ἅσυχον adv. спокойно (Theocr. - v. l. ἁσυχᾷ).