The story
- Proto-Indo-European*né
- Proto-Indo-European*n̥-
- Proto-Hellenic*ə-
- Ancient Greekἀ- (a-)
- Ancient Greekσύλη (súlē)
- Ancient Greekἄσυλος (ásulos)
- Ancient Greekἄσυλον (ásulon)
- Latinasȳlum
- English todayasylum
Learned borrowing from Latin asȳlum, borrowed from Ancient Greek ἄσυλον (ásulon).
Etymology from Wiktionary, CC BY-SA 4.0.