Where does “grisa ned” come from?

grisa ned (Swedish) comes from Swedish ned, from Old Norse niðr, from Proto-Germanic niþer, from Proto-Indo-European niter.

Ancestry of “grisa ned”, step by step

grisa ned traces back through two separate lines of ancestry.

via Swedish ned

StepLanguageWordMeaning
1Swedishneddown
2Old Norseniðrdown; kinsman, relative; son
3Proto-Germanicniþerdown, downwards
4Proto-Indo-Europeanniter—

via Swedish gris

StepLanguageWordMeaning
1Swedishgrisa pig; mammal of the genus "Sus"; a piglet; young...
2Old Norsegríssyoung pig, piglet
3Proto-Germanic*grīsanąto shudder, to shake
Every word from Proto-Indo-European niter →Every word from Proto-Germanic niþer →Every word from Old Norse niðr →