ταχέως
From LSJ
εἰ πάλιν ἔστι γενέσθαι, ὕπνος σ' ἔ̣χει οὐκ ἐπὶ δηρόν, εἰ δ' οὐκ ἔστιν πάλιν ἐλθεῖν, αἰώ̣νιος ὕπνος → if it is possible for you to be born again, you will fall asleep, briefly; if it is not possible to return — it would be eternal sleep
English (LSJ)
Adv. of ταχύς (q.v.).
German (Pape)
[Seite 1075] adv. von ταχύς, wie τάχα, schnell, geschwind; Il. 23, 365; Hes. Th. 103; Pind. Ol. 5, 13 N. 10, 73 u. öfter; Aesch. frg. 80; Ar. öfter; u. in Prosa, ταχέως ἢ βραδέως Plat. Charm. 159 c.
Greek (Liddell-Scott)
τᾰχέως: Ἐπίρρ. τοῦ ταχύς, ὃ ἴδε.