henkilökohtaisiin
Henkilökohtaisiin is a Finnish adjective inflection form meaning “to personal” or “personal-related” when used with a plural noun in the illative case. It is the illative plural form of the adjective henkilökkohtainen (also spelled henkilöstö? No—henkilökohtainen). In Finnish, adjectives agree with the noun they modify in number and case, so the form changes to reflect plural nouns and the illative case, which commonly expresses direction toward or into something.
The key function of henkilökkohtaisiin is to modify plural nouns in the illative, indicating something pertaining
Important stylistic note: henkilökkohtaisiin on an adjective form and not a standalone noun. It typically appears
In summary, henkilökkohtaisiin is the illative plural form of the Finnish adjective henkilökkohtainen, used to modify