Apostoliseen
Apostoliseen is a Finnish illative form of the adjective apostolinen, meaning apostolic. It is used to indicate movement toward or into something described as apostolic, such as into the apostolic faith or into the apostolic church. The form is not a standalone noun but a grammatical ending that accompanies a noun in the illative case.
In Finnish, adjectives agree with the noun they modify in number and case. The illative singular form
Etymology comes from the noun apostoli (apostle) with the common Finnish adjective suffix -inen, which yields