ревностно
From LSJ
ἔστι γὰρ τὸ ἔλαττον κακὸν μᾶλλον αἱρετὸν τοῦ μείζονος → the lesser of two evils is more desirable than the greater
Russian > Greek
ἀπό σπουδῆς, ἐπιτηδείως, ἐπιτηδέως, ἐξεπίτηδες, ἀραρότως, ἐκτενῶς, ἐκτενέως, ἐν ἐκτενείᾳ, ἐσπευσμένως, ἐκθύμως, προθύμως