útilmente
From LSJ
ὑμῖν ἔξεστι εὐδαίμοσι γενέσθαι → to you it is permitted to be joyful, it is permitted to be happy, it is permitted to be fortunate, vobis licet esse beatis
Spanish > Greek
ἐπιτηδείως, ἐπωφελῶς, εὐχρήστως, λυσιτελούντως, λυσιτελῶς, ὀνησίμως, προὔργου, συμφερόντως, συμφόρως, χρειωδῶς, χρησίμως, χρηστικῶς, ὠφελίμως