The story
- Proto-Indo-European*pelH-
- Ancient Greekπέλλος (péllos)
- Proto-Indo-European*h₃ekʷ-
- Proto-Indo-European*h₃ókʷs
- Proto-Hellenic*ókʷs
- Ancient Greekὤψ (ṓps)
- Ancient GreekΠέλοπος (Pélopos)
- Ancient Greekνῆσος (nêsos)
- Ancient GreekΠελοπόννησος (Pelopónnēsos)
- LatinPeloponnēsu
- EnglishPeloponnese
- English todayPeloponnesian
From Peloponnese + -ian.
Etymology from Wiktionary, CC BY-SA 4.0.