The story
- Proto-Indo-European*ís?
- Proto-Indo-European*h₁óynos
- Proto-Italic*oinos
- Old Latinoinos
- Latinūnus
- Latinūni-
- Proto-Indo-European*h₂enh₁-
- Proto-Indo-European*h₂enh₁mos
- Proto-Italic*anamos
- Latinanimus
- Latinūnanimus
- English todayunanimous
From Latin ūnanimus (“of one mind”), from ūnus (“one”) + animus (“mind”). Displaced native Old English ānmōd (literally “one-minded”).
Etymology from Wiktionary, CC BY-SA 4.0.