keskiaikaisen
Keskiaikaisen is the genitive singular form of the Finnish adjective keskiaikainen, meaning medieval or of the Middle Ages. It is used to describe a noun in the genitive case, for example keskiaikaisen kaupungin muurien, meaning “the walls of the medieval city.” The base adjective keskiaikainen denotes things related to the Middle Ages, such as period, culture, or architecture.
Etymology and inflection: Keskiaikainen is formed from keskiaika (Middle Ages) plus the adjectival suffix -inen. Finnish
Usage: In historical writing and description of objects, places, or art, keskiaikaisen is used to attribute