Contaminasteis

Contaminasteis is the second-person plural preterite indicative form of the Spanish verb contaminar. The verb contaminar means "to contaminate," "to pollute," or "to infect." Therefore, contaminasteis translates to "you all contaminated" or "you all polluted." This verb ending specifically refers to an action that was completed in the past by a group of people addressed directly as "you" (vosotros/vosotras). It implies a past action with a clear beginning and end. For example, one might say "Contaminasteis el río con los desechos" which means "You all contaminated the river with the waste." The context of the sentence would determine whether the meaning is literal contamination of a physical substance or a more figurative sense of spoiling or corrupting something. It is a common verb in Spanish used in various contexts related to environmental issues, health, and abstract concepts.