Where does “bisunnju” come from?

bisunnju (Proto-West Germanic) comes from Proto-West Germanic sunnju, from Proto-Germanic sunjō, from Proto-Indo-European h₁s-ónt-ih₂, from Proto-Indo-European h₁sónts, from Proto-Indo-European h₁ēs- — to be.

Ancestry of “bisunnju”, step by step

bisunnju traces back through two separate lines of ancestry.

via Proto-West Germanic sunnju

StepLanguageWordMeaning
1Proto-West Germanicsunnjuresponsibility; care; concern; worry; anxiety
2Proto-Germanicsunjōtruth, sooth; denial, protest
3Proto-Indo-Europeanh₁s-ónt-ih₂
4Proto-Indo-Europeanh₁sóntsactive participle of *h₁ésti; being, existence;...
5Proto-Indo-Europeanh₁ēs-to be

via Proto-West Germanic bi-

StepLanguageWordMeaning
1Proto-West Germanicbi-be-

Words derived from “bisunnju

Every word from Proto-Indo-European h₁ēs-Every word from Proto-Indo-European h₁sóntsEvery word from Proto-Indo-European h₁s-ónt-ih₂