Where does “vos” come from?

vos (Old Portuguese) comes from Latin vōs, from Old Latin vōs, from Proto-Italic wōs, from Proto-Indo-European *yúHs — you (plural).

Ancestry of “vos”, step by step

StepLanguageWordMeaning
1Latinvōsyou, ye, you all
2Old Latinvōs—
3Proto-Italicwōsyou
4Proto-Indo-European*yúHsyou (plural)

Words derived from “vos”

Every word from Proto-Indo-European *yúHs →Every word from Proto-Italic wōs →Every word from Old Latin vōs →