βιωφελῶς
From LSJ
Μή, φίλα ψυχά, βίον ἀθάνατον σπεῦδε, τὰν δ' ἔμπρακτον ἄντλει μαχανάν → Oh! my soul do not aspire to eternal life, but exhaust the limits of the possible
Russian (Dvoretsky)
βιωφελῶς: с житейской пользой (καλῶς εἰρῆσθαι καὶ β. Sext.).
Dutch (Woordenboekgrieks.nl)
βιωφελῶς adv. van βιωφελής.