The story
- Proto-Indo-European*sóh₂wl̥
- Proto-Germanic*sunnô
- Proto-Germanic*sunnǭ
- Proto-West Germanic*sunnā
- Old Englishsunne
- Middle Englishsonne
- Englishsun
- Proto-Indo-European*lewh₁-
- Proto-Indo-European*lewHs-
- Proto-Germanic*leusaną
- Proto-Germanic*lausaz
- English todaysunless
Etymology from Wiktionary, CC BY-SA 4.0.