упражнять
From LSJ
Τούτῳ τῷ λόγῳ χρήσαιτο ἄν τις ἐπ' ἐκείνων τῶν ἀνθρώπων οἳ παραδόξως ἀλαζονεύονται, μηδὲ τὰ κοινὰ τοῖς ἀνθρώποις ἐπιτελεῖν δυνάμενοι → One would use this fable for those who give themselves unreasonable airs, but can't handle everyday life (Aesop 40)
Russian > Greek
γυμνάζω, ἐξασκέω, ἐγγυμνάζω, ἐμμελετάω, προσγυμνάζω, ἀπογυμνάζω, ἐνασκέω, ἀσκέω