οἱ ἐνέρτεροι
From LSJ
ἄνω ποταμῶν ἱερῶν χωροῦσι παγαί → the springs of sacred rivers flow upward, backward to their sources flow the streams of holy rivers
Greek > English (Woodhouse)
the dead, the Lower World, the shades, the underworld, those below, those in the underworld