Where does “grunnlaus” come from?

grunnlaus (Norwegian Nynorsk) comes from Norwegian Nynorsk grunn, from Old Norse grunnr, from Proto-Germanic grunduz, from Proto-Indo-European gʰrem-, from Proto-Indo-European gʰer- — to rub; to stroke; to grind.

grunnlaus (Norwegian Nynorsk): groundless, unfounded

Definitions

  1. groundless, unfounded

Ancestry of “grunnlaus”, step by step

grunnlaus traces back through two separate lines of ancestry.

via Norwegian Nynorsk grunn

StepLanguageWordMeaning
1Norwegian Nynorskgrunnground, foundation; reason; shallow
2Old Norsegrunnrbottom
3Proto-Germanicgrunduzground, foundation
4Proto-Indo-Europeangʰrem-to be angry; to sound, bellow, growl, roar, be...
5Proto-Indo-Europeangʰer-to rub; to stroke; to grind

via Norwegian Nynorsk laus

StepLanguageWordMeaning
1Norwegian Nynorsklausloose; flimsy; free
2Old Norselaussloose
3Proto-Germaniclausazloose, free; empty, devoid; false, untrue
4Proto-Indo-EuropeanlewH-louse
Every word from Proto-Indo-European gʰer- →Every word from Proto-Indo-European gʰrem- →Every word from Proto-Germanic grunduz →