Where does “nonante-et-un” come from?

nonante-et-un (French) comes from French un, from Middle French un, from Old French un, from Latin ūnus, from Old Latin oinos, from Proto-Italic oinos, from Proto-Indo-European óynos — one; single.

nonante-et-un (French): ninety-one

Definitions

ninety-one

Ancestry of “nonante-et-un”, step by step

nonante-et-un traces back through 3 separate lines of ancestry.

via French un

Step	Language	Word	Meaning
1	French	un	an, a; one
2	Middle French	un	a, an; one
3	Old French	un	a, an; one
4	Latin	ūnus	one, single
5	Old Latin	oinos	one
6	Proto-Italic	oinos	cardinal number 1 Previous: n/a Next: *duō;...
7	Proto-Indo-European	óynos	one; single

via French et

Step	Language	Word	Meaning
1	French	et	and
2	Middle French	et	and
3	Old French	et	and
4	Latin	et	and; plus; though, even if
5	Proto-Indo-European	éti	beyond; over
6	Proto-Indo-European	h₁é	and, then
7	Proto-Indo-European	ǵʰe	Postpositional intensifying particle: indeed, at any rate, in fact

via French nonante

Step	Language	Word	Meaning
1	French	nonante	ninety
2	Old French	nonante	ninety
3	Latin	nonaginta	ninety; 90
4	Latin	nūnāgintā	—
5	Proto-Indo-European	h₁néwn̥(d)ḱomt	nine tens
6	Proto-Indo-European	h₁néwn̥	nine

Words derived from “nonante-et-un”

nonante-et-unième

Every word from Proto-Indo-European óynos →Every word from Proto-Italic oinos →Every word from Old Latin oinos →