The story
- Proto-Indo-European*né
- Proto-Indo-European*n̥-
- Proto-Germanic*un-
- Proto-West Germanic*un-
- Old Englishun-
- Middle Englishun-
- Englishun-
- Proto-Indo-European*seykʷ-
- Proto-Germanic*sīhwaną
- Proto-Germanic*saiwiz
- Proto-West Germanic*saiwi
- Old Englishsǣ
- Middle Englishsee
- Englishsea
- Englishseaworthy
- English todayunseaworthy
Etymology from Wiktionary, CC BY-SA 4.0.