μετανίστασθαι
From LSJ
οὐκ ἔστι γῆρας τοῦδε τοῦ μιάσματος → that pollution never wears out, that pollution can never grow old
Greek > English (Woodhouse Verbs Reversed)
(see also: μετανίστημι) change one's dwelling, change one's abode, shift one's quarters