The story
- Proto-Indo-European*ís?
- Proto-Indo-European*h₁óynos
- Proto-Italic*oinos
- Proto-Italic*noinolos
- Latinnūllus
- Old Frenchnul
- Middle Frenchnu
- Englishnull
- Latinō
- Old Frenchoh
- Middle Englisho
- EnglishO
- Middle Englisho
- Englishoh
- English todaynullo
Etymology from Wiktionary, CC BY-SA 4.0.