Where does “gitsa” come from?

gitsa (Old Norse) comes from Proto-Germanic gitisōną, from Proto-Germanic getaną, from Proto-Indo-European ǵʰed- — to defecate.

Ancestry of “gitsa”, step by step

Step	Language	Word	Meaning
1	Proto-Germanic	gitisōną	to guess
2	Proto-Germanic	getaną	to attain, acquire, get, receive, hold
3	Proto-Indo-European	ǵʰed-	to defecate

gitsa — Etymology, Origin & Word History | Etymology Explorer