Where does “niosvansad” come from?

niosvansad (Swedish) comes from Swedish nio, from Old Swedish nio, from Old Norse níu, from Proto-Germanic newun, from Proto-Indo-European h₁néwn̥ — nine.

Ancestry of “niosvansad”, step by step

niosvansad traces back through two separate lines of ancestry.

via Swedish nio

StepLanguageWordMeaning
1Swedishnionine
2Old Swedishnionine
3Old Norseníunine
4Proto-Germanicnewunnine
5Proto-Indo-Europeanh₁néwn̥nine

via Swedish svans

StepLanguageWordMeaning
1Swedishsvanstail
2Middle Low Germanswans—
Every word from Proto-Indo-European h₁néwn̥ →Every word from Proto-Germanic newun →Every word from Old Norse níu →