Where does “sorelle” come from?

sorelle (Middle English) comes from Old French sorel, from Old French sur, from Frankish sūr, from Proto-Germanic sūraz, from Proto-Indo-European suHrós — sour, salty, bitter.

Ancestry of “sorelle”, step by step

StepLanguageWordMeaning
1Old Frenchsorelsorrel
2Old Frenchsursour, biter
3Frankishsūracidic, sour; sour, acidic
4Proto-Germanicsūrazsour, acidic
5Proto-Indo-EuropeansuHróssour, salty, bitter
Every word from Proto-Indo-European suHrós →Every word from Proto-Germanic sūraz →Every word from Frankish sūr →