The story
- Proto-Italic*wre-
- Latinre-
- Old Frenchre-
- Middle Englishre-
- Englishre-
- Proto-Indo-European*h₂er-
- Proto-Indo-European*h₂reh₁-
- Proto-Italic*rēōr
- Latinreor
- Latinratus
- Proto-Indo-European*dʰeh₁-
- Proto-Italic*θakos
- Medieval Latinratifico
- Old Frenchratifier
- Middle Englishratifien
- Englishratify
- English todayreratify
Etymology from Wiktionary, CC BY-SA 4.0.