Astur-Leonese is an Ibero-Romance language with a few hundred thousand speakers that is usually known by the name of one of its dialects: Asturian, Leonese, Cantabrian, Mirandese. Extremaduran is closely related to it, often seen as an intermediate language variety between Astur-Leonese and Spanish.

One of Astur-Leonese’s relatively unique features is the retention of a neuter gender. These are retained for adjectives, which can take the possible endings -a (feminine), -u (masculine) or -o (neuter).