The story
- Old Englishof-
- Proto-Germanic*dūnaz?
- Proto-Celtic*dūnomder.?
- Proto-West Germanic*dūnā
- Old Englishdūne
- Old Englishofdūne
- Old Englishadūne
- Old Englishdūne
- Middle Englishdoun
- Englishdown
- English todaydownwards
Etymology from Wiktionary, CC BY-SA 4.0.