Where does “vosso” come from?

vosso (Old Portuguese) comes from Latin vossus, from Latin voster, from Latin vester, from Proto-Italic westeros, from Proto-Indo-European -teros — Contrastive or oppositional adjectival suffix.

Ancestry of “vosso”, step by step

vosso traces back through two separate lines of ancestry.

via Latin vossus

StepLanguageWordMeaning
1Latinvossus
2LatinvosterAlternative form of vester; your, plural...
3Latinvesteryour, yours, of you
4Proto-Italicwesterosyour
5Proto-Indo-European-terosContrastive or oppositional adjectival suffix

via Vulgar Latin vossus

StepLanguageWordMeaning
1Vulgar Latinvossus

Words derived from “vosso

Every word from Proto-Indo-European -terosEvery word from Proto-Italic westerosEvery word from Latin vester