Where does “Grondbir” come from?

Grondbir (Luxembourgish) comes from Luxembourgish Grond, from Old High German grunt, from Proto-West Germanic grundu, from Proto-Germanic grunduz, from Proto-Indo-European gʰrem-, from Proto-Indo-European gʰer- — to rub; to stroke; to grind.

Ancestry of “Grondbir”, step by step

Grondbir traces back through two separate lines of ancestry.

via Luxembourgish Grond

StepLanguageWordMeaning
1LuxembourgishGrondground, earth; ground, reason
2Old High Germangruntground
3Proto-West Germanicgrundu
4Proto-Germanicgrunduzground, foundation
5Proto-Indo-Europeangʰrem-to be angry; to sound, bellow, growl, roar, be...
6Proto-Indo-Europeangʰer-to rub; to stroke; to grind

via Luxembourgish Bir

StepLanguageWordMeaning
1LuxembourgishBirpear
2Old High Germanbirapear
3Vulgar Latinpira
4Latinpiruma pear

Words derived from “Grondbir

Every word from Proto-Indo-European gʰer-Every word from Proto-Indo-European gʰrem-Every word from Proto-Germanic grunduz