Where does “voll” come from?

voll (Middle High German) comes from Old High German foll, from Proto-West Germanic full, from Proto-Germanic fullaz, from Proto-Indo-European pl̥h₁nós, from Proto-Indo-European pleh₁- — to fill.

Ancestry of “voll”, step by step

StepLanguageWordMeaning
1Old High Germanfollfull
2Proto-West Germanicfullfull
3Proto-Germanicfullazfull; the whole, the entire
4Proto-Indo-Europeanpl̥h₁nósfull
5Proto-Indo-Europeanpleh₁-to fill
Every word from Proto-Indo-European pleh₁- →Every word from Proto-Indo-European pl̥h₁nós →Every word from Proto-Germanic fullaz →