Where does “si” come from?

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

si (Macanese): if introduces a condition

Definitions

  1. if introduces a condition

Ancestry of “si”, step by step

StepLanguageWordMeaning
1Portuguesesésee
2Old Portugueseseif
3Latinsīif, supposing that
4Proto-Italicseiso, thus
5Proto-Indo-Europeansóthis; that
Every word from Proto-Indo-European só →Every word from Proto-Italic sei →Every word from Latin sī →