Where does “соуѥта” come from?

соуѥта (Church Slavonic) comes from Proto-Slavic sujeta, from Proto-Slavic šujь, from Proto-Indo-European sewyós — left, left-hand.

Ancestry of “соуѥта”, step by step

StepLanguageWordMeaning
1Proto-Slavicsujeta—
2Proto-Slavicšujьleft
3Proto-Indo-Europeansewyósleft, left-hand
Every word from Proto-Indo-European sewyós →Every word from Proto-Slavic šujь →Every word from Proto-Slavic sujeta →