Where does “foreldrelaus” come from?

foreldrelaus (Norwegian Bokmål) comes from Norwegian Bokmål -laus, from Old Norse -lauss, from Proto-Germanic -lausaz, from Proto-Germanic lausaz, from Proto-Indo-European lewH- — louse.

Ancestry of “foreldrelaus”, step by step

StepLanguageWordMeaning
1Norwegian Bokmål-laus—
2Old Norse-lauss—
3Proto-Germanic-lausaz-less, lacking, devoid of
4Proto-Germaniclausazloose, free; empty, devoid; false, untrue
5Proto-Indo-EuropeanlewH-louse
Every word from Proto-Indo-European lewH- →Every word from Proto-Germanic lausaz →Every word from Proto-Germanic -lausaz →