The story
- Proto-Indo-European*peh₂ḱ-
- Proto-Indo-European*péh₂ḱs
- Proto-Italic*pāks
- Latinpāx
- Latinpācō
- Old Frenchpaiier
- Middle Englishpayen
- Englishpay
- Proto-Indo-European*welH-
- Proto-Italic*walso-
- Latinvallum
- Proto-West Germanic*wall
- Old Englishweall
- Middle Englishwal
- Englishwall
- English todaypaywall
Etymology from Wiktionary, CC BY-SA 4.0.