The story
- Proto-Italic*wre-
- Latinre-
- Old Frenchre-
- Middle Englishre-
- Englishre-
- Proto-Indo-European*teng-
- Proto-Germanic*þankijaną
- Proto-West Germanic*þankijan
- Old Englishþenċan
- Middle Englishthinken
- Englishthink
- English todayrethink
Etymology from Wiktionary, CC BY-SA 4.0.