The story
- Proto-Italic*wre-
- Latinre-
- Old Frenchre-
- Middle Englishre-
- Englishre-
- Proto-Indo-European*upó
- Proto-Germanic*ub
- Proto-Germanic*upp
- Proto-Germanic*upanaz
- Proto-West Germanic*opan
- Old Englishopen
- Middle Englishopen
- Englishopen
- English todayreopen
Etymology from Wiktionary, CC BY-SA 4.0.