Where does “*sigiþiz” come from?

*sigiþiz (Proto-Germanic) comes from Proto-Indo-European sek- — to cut, cut off, sever.

Ancestry of “*sigiþiz”, step by step

Step	Language	Word	Meaning
1	Proto-Indo-European	sek-	to cut, cut off, sever

*sigiþiz — Etymology, Origin & Word History | Etymology Explorer