Where does “Ostberlin” come from?

Ostberlin (German) comes from Swedish öst, from Old Swedish oster, from Old Norse ostr, from Proto-Germanic justaz, from Proto-Indo-European yaus-, from Proto-Indo-European yew(ǝ)- — to blend, mix , knead.

Ancestry of “Ostberlin”, step by step

Ostberlin traces back through two separate lines of ancestry.

via Swedish öst

StepLanguageWordMeaning
1SwedishöstTowards east, eastward; east
2Old Swedishostercheese
3Old Norseostrcheese
4Proto-Germanicjustazcheese
5Proto-Indo-Europeanyaus-—
6Proto-Indo-Europeanyew(ǝ)-to blend, mix , knead

via Swedish Berlin

StepLanguageWordMeaning
1SwedishBerlin—

Words derived from “Ostberlin”

Every word from Proto-Indo-European yew(ǝ)- →Every word from Proto-Indo-European yaus- →Every word from Proto-Germanic justaz →