Where does “gnātis” come from?

gnātis (Proto-Italic) comes from Proto-Indo-European ǵénh₁tis, from Proto-Indo-European ǵenh₁- — to produce, to beget, to give birth.

Ancestry of “gnātis”, step by step

Step	Language	Word	Meaning
1	Proto-Indo-European	ǵénh₁tis	birth, production
2	Proto-Indo-European	ǵenh₁-	to produce, to beget, to give birth

gnātis — Etymology, Origin & Word History | Etymology Explorer