Where does “se” come from?

se (Fala) comes from Old Portuguese se, from Latin sī, from Proto-Italic sei, from Proto-Indo-European só — this; that.

se (Fala): used for passive constructions with transitive...

Definitions

  1. used for passive constructions with transitive...

Ancestry of “se”, step by step

se traces back through two separate lines of ancestry.

via Old Portuguese se

StepLanguageWordMeaning
1Old Portugueseseif
2Latinsīif, supposing that
3Proto-Italicseiso, thus
4Proto-Indo-Europeansóthis; that

via Old Portuguese sse

StepLanguageWordMeaning
1Old Portuguesesse—
2Latinsēwithout
3Proto-Indo-Europeanswéself
Every word from Proto-Indo-European só →Every word from Proto-Italic sei →Every word from Latin sī →