kielenmukaiselle
Kielenmukaiselle is a Finnish adjective derived from the noun "kieli," meaning "language." The suffix "-n," indicates possession, and "-mukaiselle" is a form of the postposition "mukainen," which translates to "according to," "in accordance with," or "suitable for." Therefore, "kielenmukaiselle" literally means "according to the language" or "suitable for the language."
In practice, "kielenmukaiselle" is used to describe something that aligns with the norms, conventions, or structure
The adjective emphasizes fidelity to the established linguistic system. It implies that something is not arbitrary