The story
- Proto-Indo-European*dwóh₁
- Proto-Germanic*twai
- Proto-West Germanic*twai-
- Old Englishtwēġen
- Old Englishtwā
- Middle Englishtwo
- Englishtwo
- Proto-Indo-European*h₂er-
- Proto-Indo-European*h₂érmos
- Proto-Germanic*armaz
- Proto-West Germanic*arm
- Old Englishearm
- Middle Englisharm
- Englisharm
- Englisharmed
- English todaytwo-armed
Etymology from Wiktionary, CC BY-SA 4.0.