Where does “iaiunus” come from?

iaiunus (Latin) comes from Proto-Italic jagjūnos, from Proto-Indo-European Hyeh₂ǵ-yu-, from Proto-Indo-European Hyeh₂ǵ-ye/o- — to sacrifice.

Ancestry of “iaiunus”, step by step

Step	Language	Word	Meaning
1	Proto-Italic	jagjūnos	—
2	Proto-Indo-European	Hyeh₂ǵ-yu-	—
3	Proto-Indo-European	Hyeh₂ǵ-ye/o-	to sacrifice

iaiunus — Etymology, Origin & Word History | Etymology Explorer