The story
- Proto-Italic*merks
- Latinmerx
- Latinmercor
- Latinmercantem
- Italianmercante
- Italianmercantile
- Frenchmercantile
- English todaymercantile
Borrowed from French mercantile, from Italian mercantile, from mercante (“merchant”), from Latin mercāns (“trading”).
Etymology from Wiktionary, CC BY-SA 4.0.