The story
- Proto-Indo-European · derived from*udlós
- Illyrian · derived from*Hullurio“(place or tribe) of the serpent”
- Ancient Greek · derived fromἸλλυρία
- Latin · borrowed fromIllyria
- English todayIllyria
From Latin Illyria, from Ancient Greek Ἰλλυρία (Illuría), which may be from Illyrian *Hullurio (“(place or tribe) of the serpent”), from Proto-Indo-European *udlós. This is supported by the attestation of Hílurios by Plautus in Menaechmi (200s BC).
Etymology from Wiktionary, CC BY-SA 4.0.