The story
- Proto-Indo-European*swenh₂-
- Proto-Indo-European*swónh₂-os
- Proto-Germanic*swanaz
- Proto-West Germanic*swan
- Old Englishswan
- Middle Englishswan
- Englishswan
- Proto-Indo-European*leyg-
- Proto-Germanic*līką
- English todayswanlike
Etymology from Wiktionary, CC BY-SA 4.0.