Where does “ērde” come from?

ērde (Middle Low German) comes from Old Saxon ertha, from Proto-West Germanic erþu, from Proto-Germanic erþō, from Proto-Indo-European h₁er- — earth.

Ancestry of “ērde”, step by step

StepLanguageWordMeaning
1Old Saxonerthaearth, ground
2Proto-West Germanicerþuearth, world; earth, soil
3Proto-Germanicerþōearth
4Proto-Indo-Europeanh₁er-earth

Words derived from “ērde”

Every word from Proto-Indo-European h₁er- →Every word from Proto-Germanic erþō →Every word from Proto-West Germanic erþu →