eternamente
From LSJ
ἀλλ' ἐπὶ καὶ θανάτῳ φάρμακον κάλλιστον ἑᾶς ἀρετᾶς ἅλιξιν εὑρέσθαι σὺν ἄλλοις → even at the price of death, the fairest way to win his own exploits together with his other companions | but even at the risk of death would find the finest elixir of excellence together with his other companions | but to find, together with other young men, the finest remedy — the remedy of one's own valor — even at the risk of death
Spanish > Greek
ἀγενήτως, ἀεί, ἀενάως, ἀθανάτως, αἰανῶς, ἀϊδίως, αἰέν, αἰωνίως, ἀκαταλύτως, ἀκαταπαύστως, ἀπαύστως, ἀτελευτήτως, ἀφθάρτως, ἀφθίτως, δι' αἰῶνος, διαιωνίως, εἰς ἀΐδιον, εἰς πάντα χρόνον, εἰς τὸ πᾶν χρόνου, εἰσαεί, ἐσαεί, τὸν δι' αἰῶνος χρόνον