Where does “bisunnju” come from?

bisunnju (Frankish) comes from Proto-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

StepLanguageWordMeaning
1Proto-Germanic*sunnju
2Proto-Germanicsunjōtruth, sooth; denial, protest
3Proto-Indo-Europeanh₁s-ónt-ih₂
4Proto-Indo-Europeanh₁sóntsactive participle of *h₁ésti; being, existence;...
5Proto-Indo-Europeanh₁ēs-to 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