The story
- Proto-Indo-European*né
- Proto-Indo-European*n̥-
- Proto-Germanic*un-
- Proto-West Germanic*un-
- Old Englishun-
- Middle Englishun-
- Englishun-
- Proto-Italic*merks
- Latinmerx
- Latinmercor
- Latinmercantem
- Italianmercante
- Italianmercantile
- Frenchmercantile
- Englishmercantile
- English todayunmercantile
From un- + mercantile.
Etymology from Wiktionary, CC BY-SA 4.0.