Where does “unis” come from?

unis (French) comes from French unir, from Old French unir, from Latin ūniō, from Latin -iō, from Proto-West Germanic -jō, from Proto-Indo-European -yéti, from Proto-Indo-European yé-, from Chichewa iye — he, she.

unis (French): first-person singular present indicative of unir;...

Definitions

first-person singular present indicative of unir;...

Ancestry of “unis”, step by step

Step	Language	Word	Meaning
1	French	unir	to unite, join; to combine
2	Old French	unir	—
3	Latin	ūniō	a unity, union
4	Latin	-iō	—
5	Proto-West Germanic	-jō	Forms agent nouns from verbs
6	Proto-Indo-European	-yéti	Creates intransitive, often deponent,...
7	Proto-Indo-European	yé-	—
8	Chichewa	iye	he, she

Every word from Chichewa iye →Every word from Proto-Indo-European -yéti →Every word from Latin -iō →