Vuestrovuestravuestrosvuestras

Vuestrovuestravuestrosvuestras is not an established term in Spanish linguistics. It is a concatenation of the four standard second-person possessive adjectives: vuestro, vuestra, vuestros, vuestras. It is sometimes used as a mnemonic or teaching aid to show how the possessive aligns with gender and number, but in ordinary writing a speaker selects the appropriate form for the noun that follows.

These forms are possessive adjectives that modify a noun and must agree in gender and number with that noun. Examples include: vuestro coche (your masculine singular), vuestra casa (your feminine singular), vuestros libros (your masculine plural), vuestras ideas (your feminine plural). In Spanish, the possessive adjective generally appears before the noun, though pronoun usage can replace the noun phrase.

Regional variation is notable. In Spain, vosotros/vosotras forms are common for informal second-person plural, so vuestros/vuestras are frequently used. In much of Latin America, ustedes is the default second-person plural, and the possessive is often expressed with su(s) rather than with vosotros/vosotras forms, though regional speakers may still use vuestros and vuestras in informal contexts.

Pronoun use is also possible. When used as a pronoun with a definite article, forms such as el vuestro, los vuestros, la vuestra, and las vuestras occur to refer to things belonging to you all. The more widely used alternative in many varieties is to use el suyo/los suyos, etc., for possessive pronouns.

Overall, vuestro/vuestra/vuetros/vuestras covers the standard plural-second-person possessives in Spanish, with regional preferences influencing actual usage.