Where does “vostre” come from?

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

Ancestry of “vostre”, step by step

Step	Language	Word	Meaning
1	Latin	voster	Alternative form of vester; your, plural...
2	Latin	vester	your, yours, of you
3	Proto-Italic	westeros	your
4	Proto-Indo-European	-teros	Contrastive or oppositional adjectival suffix

Words derived from “vostre”

vostre

Every word from Proto-Indo-European -teros →Every word from Proto-Italic westeros →Every word from Latin vester →