teidän

Teidän is a Finnish possessive form that corresponds to the second person plural, or to the polite form of you in some contexts. It functions both as a possessive determiner before a noun and as a predicative possessive pronoun meaning “yours.”

When teidän is used with a noun, possession is usually expressed on the noun itself with a possessive suffix. Common examples are talonne (your house) and autonne (your car). In everyday speech, the suffix on the noun often suffices to convey ownership, so teidän as a separate determiner is less frequent and may be used for emphasis or clarity in some phrases.

As a predicative pronoun, teidän can stand alone after a verb of being to mean “yours.” For example, Se on teidän translates to “That is yours.” Similarly, these items are not yours would be Näissä ei ole teidän, depending on exact construction. In this use, teidän is typically invariable and does not change with case endings, since the possessive relationship is expressed on the noun or carried by the predicative construction.

Usage notes include that Finnish commonly marks possession on the noun with suffixes (like -nne) rather than relying on a separate determiner, so teidän tends to appear in emphasis, in isolating phrases, or in contexts where the noun’s possessive suffix alone cannot already convey ownership. Teidän is part of the larger system of Finnish possessive forms and is used to indicate ownership by the group addressed as “you.”