The story
- Proto-Indo-European*h₂éd
- Proto-Italic*ad
- Proto-Italic*ad-
- Latinad-
- Old Frencha-
- Proto-Indo-European*wéyHs
- Proto-Italic*wīs
- Latinvim
- Proto-Indo-European*deyḱ-
- Proto-Indo-European*déyḱs
- Latindīcere
- Latinvindex
- Latinvindicāre
- Old Frenchvengier
- Old Frenchavengier
- Middle Englishavengen
- English todayavenge
Inherited from Middle English avengen, borrowed from Old French avengier, from a- + vengier.
Etymology from Wiktionary, CC BY-SA 4.0.