Where does “mørker” come from?

mørker (Old Swedish) comes from Old Norse myrkr, from Proto-Germanic merkuz, from Proto-Indo-European mergʷ- — dark, coloured; to flicker; to darken; to be dark.

Ancestry of “mørker”, step by step

StepLanguageWordMeaning
1Old Norsemyrkrdark, murky
2Proto-Germanicmerkuzdark
3Proto-Indo-Europeanmergʷ-dark, coloured; to flicker; to darken; to be dark
Every word from Proto-Indo-European mergʷ- →Every word from Proto-Germanic merkuz →Every word from Old Norse myrkr →