Where does “unul” come from?

unul (Romanian) comes from Romanian unu, from Latin ūnus, from Old Latin oinos, from Proto-Italic oinos, from Proto-Indo-European óynos — one; single.

unul (Romanian): one

Definitions

Ancestry of “unul”, step by step

unul traces back through two separate lines of ancestry.

via Romanian unu

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

via Romanian un

Step	Language	Word	Meaning
1	Romanian	un	a, an
2	Romanian	preună	—

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