Where does “søster” come from?

søster (Danish) comes from Old Danish systær, from Old Norse systir, from Proto-Norse ᛊᚹᛖᛊᛏᚨᚱ, from Proto-Germanic swestēr, from Proto-Indo-European swésōr, from Proto-Indo-European su-h₁ésh₂-ōr, from Proto-Indo-European h₁ésh₂r̥ — blood.

søster (Danish): sister

Definitions

sister

Ancestry of “søster”, step by step

Step	Language	Word	Meaning
1	Old Danish	systær	sister
2	Old Norse	systir	sister
3	Proto-Norse	ᛊᚹᛖᛊᛏᚨᚱ	sister
4	Proto-Germanic	swestēr	sister
5	Proto-Indo-European	swésōr	sister
6	Proto-Indo-European	su-h₁ésh₂-ōr	—
7	Proto-Indo-European	h₁ésh₂r̥	blood

Words derived from “søster”

halvsøster

Every word from Proto-Indo-European h₁ésh₂r̥ →

søster — Etymology, Origin & Word History | Etymology Explorer