Perheisiin

Perheisiin is the illative plural form of the Finnish noun perhe, meaning “to the families” or “into the families.” It is a grammatical form rather than a concept with independent meaning, used when describing actions directed toward multiple families or movement toward them.

In Finnish, illative expresses direction into or onto something. The plural illative ending is -iin, so the base perhe becomes perheisiin. Related forms include perheeseen for the singular illative (to the family) and perheissä for the plural inessive (in the families). These forms illustrate how Finnish marks both number (singular vs. plural) and direction/location.

Usage and examples: Perheisiin appears in sentences where an action or direction targets multiple families. For example, Koulutusohjelma suunnataan perheisiin, joissa on nuoria lapsia, meaning that the program is aimed at or directed to families with young children. Another example is Tutkimus kartoittaa palveluita perheisiin liittyen, which discusses services related to families.

Notes: Perheisiin is primarily a grammatical inflection and is not a standalone concept outside of linguistic usage. Its function is to specify destination or orientation toward multiple families within sentences that discuss programs, services, research, or policy interventions.

See also: Finnish grammar; Illative case; Perhe.