The story
- Proto-Indo-European*peh₂ḱ-
- Proto-Indo-European*péh₂ḱs
- Proto-Italic*pāks
- Latinpāx
- Latinpācō
- Old Frenchpaiier
- Middle Englishpayen
- Englishpay
- Proto-Indo-European*sem-
- Proto-Germanic*samþuz /*samftuz
- Proto-West Germanic*samft(ī)
- Old Englishsōfte
- Middle Englishsofte
- Englishsoft
- Proto-Germanic*warō
- Proto-West Germanic*waru
- Old Englishwaru
- Middle Englishware
- Englishsoftwarebf.
- English todaypayware
Etymology from Wiktionary, CC BY-SA 4.0.