The story
- Englishpro-
- Proto-Indo-European*wers-
- Proto-Germanic*werzaną
- Proto-West Germanic*werʀan
- Frankish*werʀ
- Early Medieval Latinwerra
- Old Northern Frenchguerre
- Old Englishwerre
- Middle Englishwerre
- Englishwar
- English todaypro-war
Etymology from Wiktionary, CC BY-SA 4.0.