Where does “śwejsować” come from?

śwejsować (Polish) comes from German schweißen, from Middle High German sweizen, from Old High German sweizen, from Proto-Germanic swaitijaną, from Proto-Germanic -janą, from Proto-Indo-European -yéti, from Proto-Indo-European yé-, from Chichewa iye — he, she.

Ancestry of “śwejsować”, step by step

StepLanguageWordMeaning
1Germanschweißento weld; to sweat; to bleed
2Middle High Germansweizento sweat, bleed
3Old High Germansweizento roast
4Proto-Germanicswaitijanąto sweat
5Proto-Germanic-janąDerives denominatives from nouns and factitives...
6Proto-Indo-European-yétiCreates intransitive, often deponent,...
7Proto-Indo-Europeanyé-
8Chichewaiyehe, she
Every word from Chichewa iyeEvery word from Proto-Germanic -janąEvery word from Proto-Indo-European -yéti