κρυπτάδιος
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)
[ᾰ], α, ον (and ος, ον A.Ch.946 (lyr.)),
A secret, clandestine, κρυπταδίῃ φιλότητι Il.6.161; κρυπταδίου μάχας A. l.c.; κρυπτάδια φρονέοντα Il.1.542. Regul. Adv. -ίως Man.2.195, 6.182.