ystäviinsä

Ystäviinsä is a Finnish noun form built from the word ystävä (friend) and two inflectional elements: the illative plural marker and the third-person possessive suffix. It represents the illative plural of ystävä (into/to the friends) with the possessive suffix -sä, indicating that the friends belong to someone. In practice, ystäviinsä is used to refer to a group of friends belonging to a third person and, in certain constructions, to denote the recipient of an action toward that group.

Morphologically, Finnish uses the illative case to express movement into or toward something, and the plural illative ending is typically -iin, yielding a stem such as ystäviin for “into/to the friends.” The suffix -sä (from -nsä) is the third-person possessive suffix, agreeing with the possessor (he/she/they). When these elements are combined, the form becomes ystäviinsä.

Usage and meaning can be context-specific. The form tends to appear in more formal or literary contexts or in fixed expressions, rather than in everyday speech. It is commonly found when referring to greetings, messages, or other actions directed toward the group of a person’s friends. For example, a sentence like terveiset ystäviinsä means “greetings to his/her friends,” with ystäviinsä marking the destination and possession related to the third-person subject.

In summary, ystäviinsä is a specialized Finnish inflected form indicating “to/into the friends” belonging to someone, used in contexts involving direction toward that group and in forms with a third-person possessor.