διὰ νήσων τὸν πλόον ἐποιεῦντο → they kept sailing through the islands
ἐπεισαγώγιμος, ἀλλόγνωτος, ὀθνεῖος, ἀλλόφυλος, ἔκφυλος, ἐπακτός, ἔκτοπος, ἀνοίκειος, ξένιος, ξείνιος, ἀλλόχρως, ἐξόμιλος, ἄφυλος, ἀλλότριος, ξένος, ξεῖνος, ξέννος