Where does “røst” come from?

røst (Norwegian Nynorsk) comes from Old Norse raust, from Proto-Indo-European h₃reyH-, from Proto-Indo-European h₃er- — to move, to stir; to rise, to spring; to quarrel,...

Ancestry of “røst”, step by step

røst traces back through two separate lines of ancestry.

via Old Norse raust

StepLanguageWordMeaning
1Old Norseraustroofing frame, roof
2Proto-Indo-Europeanh₃reyH-to move, set in motion
3Proto-Indo-Europeanh₃er-to move, to stir; to rise, to spring; to quarrel,...

via Middle Norwegian raust

StepLanguageWordMeaning
1Middle Norwegianraust
Every word from Proto-Indo-European h₃er-Every word from Proto-Indo-European h₃reyH-Every word from Old Norse raust