familiarizasteis

Familiarizasteis is the pretérite (simple past) form of the Spanish verb familiarizar in the second person plural (vosotros). It denotes that you all became familiar with or acquainted someone or something in a past action. In practice, it is commonly used with a complément such as con or a to indicate what was made familiar. For example: "Familiarizasteis a los nuevos empleados con las normas de seguridad."

Conjugation and usage: familiarizar is a regular -ar verb in the pretérito perfecto simple. The standard endings for vosotros are -asteis, yielding familiarizasteis. The full conjugation in pretérito for this verb is: yo familiaricé, tú familiarizaste, él/ella/Ud. familiarizó, nosotros familiarizamos, vosotros familiarizasteis, ellos/ellas/Uds. familiarizaron.

Regional and pronoun considerations: The form familiarizasteis is characteristic of Spanish dialects that use vosotros, notably Spain. In Latin American Spanish, the equivalent pretérito is typically formed with ustedes: ustedes familiarizaron. When used pronominally as familiarizarse (to become familiar), the second-person plural pretérito would be os familiarizasteis, with the reflexive pronoun included.

Notes: The form is regular, with no irregular stem changes. Its practical use depends on the audience's regional variety and the presence or absence of the second-person plural pronoun.