Where does “siskopuoli” come from?

siskopuoli (Finnish) comes from Finnish Sisko, from Finnish sisar, from Proto-Finnic sesar, from Proto-Balto-Slavic swésō, from Proto-Indo-European swésōr, from Proto-Indo-European su-h₁ésh₂-ōr, from Proto-Indo-European h₁ésh₂r̥ — blood.

siskopuoli (Finnish): half sister, half-sister; stepsister

Definitions

  1. half sister, half-sister; stepsister

Ancestry of “siskopuoli”, step by step

siskopuoli traces back through two separate lines of ancestry.

via Finnish Sisko

StepLanguageWordMeaning
1FinnishSiskosister
2Finnishsisarsister
3Proto-Finnicsesarsister
4Proto-Balto-Slavicswésōsister
5Proto-Indo-Europeanswésōrsister
6Proto-Indo-Europeansu-h₁ésh₂-ōr—
7Proto-Indo-Europeanh₁ésh₂r̥blood

via Finnish puoli

StepLanguageWordMeaning
1Finnishpuolihalf; when followed by a number representing an...
2Proto-Finnicpoolihalf, side; half
3Proto-Uralicpälähalf
Every word from Proto-Indo-European h₁ésh₂r̥ →Every word from Proto-Indo-European su-h₁ésh₂-ōr →Every word from Proto-Indo-European swésōr →