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Home / German possessive determiners: mein, dein and their endings

How do German possessive determiners change before a noun?

First identify whose person or thing you mean. Then choose the ending for the noun that follows and the case required by the sentence.

Start with the sentence

This lesson uses possessive forms before a noun. The separate standalone-pronoun lesson covers the forms used when that noun is omitted.

Keep the owner and the noun separate

Amir hat eine Tasse. Das ist seine Tasse.: sein- refers to Amir; -e belongs to the feminine noun die Tasse. It does not matter that Amir is a man and the cup is feminine. Now reverse the combination: Lina hat einen Rucksack. Das ist ihr Rucksack.. ihr- refers to Lina, while the noun is masculine.

Possession includes relationships and association, not just ownership: meine Schwester, unser Kurs, Ihr Termin. Establish the reference in context before choosing a form. If ihr could refer to several people, repeat a name or group rather than expecting the ending to identify the owner.

Choose the owner form first
Owner / referencePossessive stem
ichmein-
dudein-
ersein-
sie (Singular)ihr-
essein-
wirunser-
ihreuer- / eur-
sie (Plural)ihr-
SieIhr-

Add the ending when a noun follows

A possessive determiner, or Possessivartikel, stands before a noun. For this common use, its endings follow the ein-word pattern. Choose the case from the sentence, then the noun’s grammatical gender and number. Do not choose the case from the owner.

Compare Mein Rucksack ist schwer with Ich suche meinen Rucksack. The owner stays “I”; the phrase changes from nominative subject to accusative object. Ich spreche mit meiner Schwester uses dative after mit. If case choice is the problem, work through the dative and accusative practice.

Possessive determiners with a noun: mein as the model
CaseMasculine: der RucksackNeuter: das HandyFeminine: die TaschePlural: die Freunde
Nominativmein Rucksackmein Handymeine Taschemeine Freunde
Akkusativmeinen Rucksackmein Handymeine Taschemeine Freunde
Dativmeinem Rucksackmeinem Handymeiner Taschemeinen Freunden
Genitivmeines Rucksacksmeines Handysmeiner Taschemeiner Freunde

In dative plural, the noun often needs -n too: mit meinen Freunden. The genitive row is included for recognition; the genitive guide explains the noun changes. If you add an adjective, it has its own ending: mein neuer Rucksack. Use the separate adjective-ending guide for that decision.

Check euer, eure and formal Ihr

The informal plural owner is ihr, with possessive euer: Ist das euer Zimmer?. Before an ending, the common forms use eur-: eure Wohnung, euren Rucksack, mit eurem Handy. Do not confuse this with ihr Zimmer, which can mean her room or their room.

Formal Sie takes capitalized Ihr-: Frau Nguyen, ist das Ihre Tasche?. The case ending still follows the noun: Ihr Termin, Ihren Termin, mit Ihrer Kollegin. Capitalization marks formal address; it does not remove agreement. An answer about yourself changes the owner: Ja, das ist meine Tasche.

Practise with the context

State the owner and the noun’s gender before each answer. Decide separately whether the noun remains in the sentence.

  1. Amir hat eine Tasse. Das ist ___ Tasse. Choose “his”.

    Show answer and reason

    Das ist seine Tasse. Amir gives sein-; feminine nominative Tasse adds -e.

  1. Lina sucht den Schlüssel. Sie sucht ___ Schlüssel. Choose “her”; der Schlüssel is singular.

    Show answer and reason

    Sie sucht ihren Schlüssel. Lina gives ihr-; a masculine accusative object needs -en.

  1. Ich spreche mit ___ Bruder. Choose “my”.

    Show answer and reason

    Ich spreche mit meinem Bruder. mit requires dative; masculine Bruder takes meinem.

  1. Ihr habt ein Zimmer. Ist das ___ Zimmer?

    Show answer and reason

    Ist das euer Zimmer? The owner is informal plural ihr; neuter nominative before a noun has no added ending.

  1. Ich warte vor ___ Wohnung. Say “your”, addressing several friends.

    Show answer and reason

    Ich warte vor eurer Wohnung. Here vor describes location and takes dative; feminine Wohnung gives -er.

  1. Frau Nguyen, ist das ___ Termin? Use formal “your”.

    Show answer and reason

    Frau Nguyen, ist das Ihr Termin? Formal Ihr is capitalized; masculine nominative before Termin has no added ending.

  1. Ich fahre mit ___ Freunden. Choose “my”.

    Show answer and reason

    Ich fahre mit meinen Freunden. Dative plural needs meinen, and Freunde becomes Freunden.

Start with the topic overview

German possessive forms: mein, dein and the right ending · Find another grammar topic

Questions about this topic

Is sein chosen because the object is masculine?

No. The stem sein- refers to an owner represented by er or es. The ending follows the possessed noun and case: seine Tasche, sein Handy and seinen Rucksack are all possible.

Are Possessivartikel and Possessivpronomen different topics?

Some teaching materials use Possessivpronomen for both. The useful distinction is their job: mein before a noun introduces a noun phrase; meiner or meins can replace one. Check which function a table describes.

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