The genitive case

Das ist das Auto meines Bruders.That's my brother's car.

The genitive links one noun to another — showing that something belongs to or is related to it, the idea English carries with 's or of. It's the fourth and last case, alongside the nominative (subject), accusative (direct object) and dative (indirect object).

Quick shortcut: der/das → des, die → der, and plural die → der. Masculine and neuter singular nouns also take an -s/-es ending: der Mann → des Mannes, das Kind → des Kindes.

What the genitive shows

The genitive links two nouns, where one belongs to or is defined by the other:

• das Auto des Mannes (the man's car / the car of the man)
• die Farbe der Blume (the color of the flower)
• der Anfang des Jahres (the beginning of the year)

The question "wessen?" (whose?) can help identify it: Wessen Auto ist das? — Das Auto des Mannes.

The genitive articles

Masculine and neuter share des/eines, just like they share dem/einem in the dative — only feminine and plural stand apart, both taking der.

Masculine and neuter nouns take an -s or -es ending

This is the genitive's own extra twist, with no equivalent in the dative: a masculine or neuter noun in the singular usually takes an ending too, not just its article.

• Nouns ending in an s-sound (-s, -ß, -x, -z) always take -es: der Fluss → des Flusses.
• Monosyllabic nouns commonly take -es too, though -s is also accepted and increasingly common in everyday use: der Mann → des Mannes (or Manns), das Kind → des Kindes (or Kinds).
• Longer nouns of more than one syllable simply take -s: das Auto → des Autos.
• Feminine and plural nouns never change: die Frau → der Frau, die Kinder → der Kinder.

❌ das Auto des Mann → ✅ das Auto des Mannes — the noun itself needs the ending, not just the article.

One group needs extra care: weak masculine nouns like der Junge (boy) or der Student, which already take -n/-en in the accusative and dative (den Jungen, den Studenten), keep that same ending in the genitive instead of -s — des Jungen, des Studenten, not ❌ des Jungens. This pattern (the n-declension) is its own topic; for now, just recognize that a handful of masculine nouns don't follow the -s/-es rule at all.

Word order: genitive after the noun

A genitive noun phrase normally follows the noun it belongs to:

• das Auto des Mannes (the man's car). The reverse order, des Mannes Auto, is grammatical too, but reads as formal or literary rather than everyday speech.

Proper names are the exception and work the opposite way, exactly like English 's: the name comes first and simply adds -s, with no article or extra ending — Peters Auto (Peter's car), Annas Buch (Anna's book). No apostrophe is used before this -s, unlike English — except for names that already end in an s-sound (-s, -ß, -x, -z), which take only an apostrophe, with no extra -s: Hans' Auto, Max' Buch.

Genitive vs. von in everyday speech

Spoken German very often avoids the genitive altogether, replacing it with von + dative:

• Genitive (more formal/written): das Auto des Mannes
• Spoken alternative: das Auto von dem Mann (usually contracted: vom Mann)

Both are correct German, but they aren't fully interchangeable by register: the genitive is expected in writing, formal speech, and fixed expressions, while von + dative dominates casual conversation — especially with names and pronouns, where genitive can sound stiff. Certain prepositions with the genitive (wegen, während, trotz, statt) also govern this case; those are covered separately.

Common mistakes

• ❌ das Auto des Mann → ✅ das Auto des Mannes (the noun needs its own ending, not just the article)
• ❌ des Jungens Ball → ✅ der Ball des Jungen (weak masculine nouns take -n/-en, not -s)
• ❌ Peter's Auto → ✅ Peters Auto (no apostrophe before the possessive -s on a name — unless the name already ends in an s-sound, like Hans' Auto)

Quick check

Which form is correct?

1. die Tasche ___ Frau (die / der) — bag of the woman
2. das Ende ___ Films (der / des) — end of the film
3. der Titel ___ Buches (das / des) — title of the book (das Buch)
4. ___ Auto (Anna's / Annas) — Anna's car

Key takeaways

• The genitive case shows possession or a relationship between two nouns, like English 's or of. The question wessen? (whose?) can help identify it.
• Articles: der/das → des, die → der, plural die → der.
• Masculine and neuter singular nouns take an ending too: -es after an s-sound and commonly with monosyllabic nouns (des Mannes, des Kindes), plain -s otherwise (des Autos). Weak masculine nouns keep their -n/-en ending instead (des Jungen, des Studenten).
• A genitive phrase normally follows the noun it belongs to; proper names work the opposite way, coming first and adding -s with no apostrophe (Peters Auto) — except names already ending in an s-sound, which add only an apostrophe (Hans' Auto).
• Everyday speech often replaces the genitive with von + dative (vom Mann); the genitive itself stays standard in writing and set expressions.