Where does “lust” come from?

lust (Old Danish) comes from Middle Low German lust, from Old Saxon lust, from Proto-West Germanic lustu, from Proto-Germanic lustuz, from Proto-Germanic lausaz, from Proto-Indo-European lewH- — louse.

Ancestry of “lust”, step by step

StepLanguageWordMeaning
1Middle Low Germanlust—
2Old Saxonlust—
3Proto-West Germaniclustudesire, want, lust
4Proto-Germaniclustuzlust, desire, want
5Proto-Germaniclausazloose, free; empty, devoid; false, untrue
6Proto-Indo-EuropeanlewH-louse
Every word from Proto-Indo-European lewH- →Every word from Proto-Germanic lausaz →Every word from Proto-Germanic lustuz →