Where does “sí” come from?

sí (Asturian) comes from Latin sīc, from Latin sice, from Latin sī, from Proto-Italic sei, from Proto-Indo-European só — this; that.

sí (Asturian): yes

Definitions

  1. yes

Ancestry of “sí”, step by step

StepLanguageWordMeaning
1Latinsīcyes, indeed (If answering a question)
2Latinsice—
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 →