ἐπάγρυπνος
From LSJ
Ἀναξαγόρας δύο ἔλεγε διδασκαλίας εἶναι θανάτου, τόν τε πρὸ τοῦ γενέσθαι χρόνον καὶ τὸν ὕπνον → Anaxagoras used to say that we have two teachers for death: the time before we were born and sleep | Anaxagoras said that there are two rehearsals for death: the time before being born and sleep
English (LSJ)
ον,
A wakeful, sleepless, κηδεμονία Mitteis Chr.77.11 (Sup., iv A. D.), cf. Vett. Val.11.16, Aristaenet.1.27.