необходимость

From LSJ

οὔτε σοφίας ἐνδείᾳ οὔτ' αἰσχύνης περιουσίᾳ → neither from lack of knowledge nor from superfluity of modesty

Source

Russian > Greek

χρέος, ἔργον, ἀναγκαιότης, ἀναγκαῖον, ἀνάγκη, ἀνάγκα