ῥηΐτατα

From LSJ

Μηκέθ᾽ ὅλως περὶ τοῦ οἷόν τινα εἶναι τὸν ἀγαθὸν ἄνδρα διαλέγεσθαι, ἀλλὰ εἶναι τοιοῦτον. → Waste no more time arguing what a good man should be. Be one.

Source

Russian (Dvoretsky)

ῥηΐτατα: эп. superl. к ῥᾳδίως.