The story
- Proto-Indo-European*sem-
- Proto-Indo-European*sm̥-
- Proto-Indo-European*smih₂
- Proto-Indo-European*ǵʰes-
- Proto-Indo-European*ǵʰéslom
- Proto-Indo-European*ǵʰéslih₂
- Proto-Indo-European*smih₂ǵʰéslih₂
- Proto-Italic*smīɣeslī
- Latinmīlle
- Italianmille
- Italianmilione
- Old Frenchmillion
- Middle Frenchmillion
- Frenchmillion
- Frenchmillionnaire
- Englishmillionaire
- English todaymillionairess
From millionaire + -ess.
Etymology from Wiktionary, CC BY-SA 4.0.