vuestras

Vuestras is the feminine plural form of the Spanish possessive for the second person plural, corresponding to "yours" in English when addressing more than one person. It is used with the noun it modifies to indicate ownership by the people being spoken to, specifically in conjunction with vosotros or vosotras in Spain.

Grammatically, vuestras is a possessive determiner (adjetivo posesivo) that agrees in gender and number with the noun it accompanies. The related forms for the same possessive are: vuestro (masculine singular), vuestra (feminine singular), vuestros (masculine plural), and vuestras (feminine plural). When used as a possessive pronoun, the same endings can stand alone, for example, Estas llaves son vuestras (these keys are yours).

Usage and regional variation: in Spain, vuestras is standard with vosotros/vosotras. In many Latin American varieties where ustedes is the norm for the second person plural, the corresponding possessive is typically sus (e.g., sus casas). Nevertheless, vuestras can appear in contexts where the influence of Spain or informal speech preserves the traditional vos pronoun system.

Examples:

- vuestras casas: your houses

- vuestras ideas: your ideas

- Estas llaves son vuestras: These keys are yours

Etymology and relation to other forms: vuestras derives from the broader Spanish possessive system that marks agreement with the noun. It is one of the set of forms built from the same root as vuestro/vuestra, reflecting the second-person plural possessive in Spanish.

See also: possessive adjectives, possessive pronouns, vosotros/vosotras, ustedes, sus.