Where does “una vez más” come from?

una vez más (Spanish) comes from Spanish una, from Spanish uno, from Old Spanish uno, from Latin ūnus, from Old Latin oinos, from Proto-Italic oinos, from Proto-Indo-European óynos — one; single.

una vez más (Spanish): once again

Definitions

once again

Ancestry of “una vez más”, step by step

una vez más traces back through two separate lines of ancestry.

via Spanish una

Step	Language	Word	Meaning
1	Spanish	una	feminine singular of uno; feminine singular of...
2	Spanish	uno	one
3	Old Spanish	uno	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 Spanish vez

Step	Language	Word	Meaning
1	Spanish	vez	time, instance; place; turn
2	Latin	vicis	change, alternation, turn; time, instance; season
3	Proto-Indo-European	weyḱ-	to enter in; to settle; settlement
4	Proto-Indo-European	wey-	to wither; fade; to move, go ahead; to be strong;...

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