adjective
Castilian-speaking (in regions of Spain where other official languages, such as Catalan, Galician, and Basque, are prominently spoken)
Castilian-speaking (in regions of Spain where other official languages, such as Catalan, Galician, and Basque, are prominently spoken)
Castilian speaker (in regions of Spain where other official languages, such as Catalan, Galician, and Basque, are prominently spoken)