Where does “roba” come from?

roba (Old Polish) comes from Czech orba, from Czech orat, from Old Czech orati, from Proto-Slavic oràti, from Proto-Balto-Slavic árˀtei, from Proto-Indo-European h₂éryeti, from Proto-Indo-European h₂erh₃-, from Proto-Indo-European h₁er- — earth.

Ancestry of “roba”, step by step

StepLanguageWordMeaning
1Czechorbaploughing
2Czechoratto plough
3Old Czechorati
4Proto-Slavicoràtito plough
5Proto-Balto-Slavicárˀteito plow/plough
6Proto-Indo-Europeanh₂éryetito be ploughing
7Proto-Indo-Europeanh₂erh₃-to plough
8Proto-Indo-Europeanh₁er-earth

Words derived from “roba

Every word from Proto-Indo-European h₁er-Every word from Proto-Indo-European h₂erh₃-Every word from Proto-Indo-European h₂éryeti
roba — Etymology, Origin & Word History | Etymology Explorer