Perustetut

Perustetut is a Finnish word that functions as a descriptive form meaning "established" or "founded." It is the plural nominative form of the past passive participle of the verb perustaa, which means to establish or found. The form is used to describe entities that have been created in the past and agrees in number with the noun it modifies (for example, perustetut kaupungit – established towns; perustetut yritykset – established companies). As a participial adjective, perustetut declines like other Finnish adjectives in case and number; singular forms include perustettu, while genitive forms are perustettujen, and partitive forms include perustettuja.

In neutral and formal prose, perustetut commonly appears in historical, legal, or organizational contexts to indicate founding status. It is typically paired with a year or date to specify when the establishment occurred, e.g., Perustettu vuonna 1890. The related verb is perustaa, and its nouns include perustaminen (the act of founding) and perustaja (founder).

See also: perustaa, perustaminen, perustaja.