Why does the noun Ausbau have the article der?

This noun follows no general suffix rule — its gender is part of the core vocabulary you simply learn alongside the word.

Declension table for German noun Ausbau

How it changes across the four cases.

CaseDefiniteIndefiniteNegative
Nominativder Ausbauein Ausbaukein Ausbau
Akkusativden Ausbaueinen Ausbaukeinen Ausbau
Dativdem Ausbaueinem Ausbaukeinem Ausbau
Genitivdes Ausbauseines Ausbauskeines Ausbaus

Examples in context

Real sentences using Ausbau in different cases.

CaseDefiniteIndefiniteNegative
Nominativ
Der neue Ausbau ist fertig.The new expansion is finished.
Ein schneller Ausbau ist geplant.A quick expansion is planned.
Kein Ausbau ist möglich.No expansion is possible.
Akkusativ
Wir planen den neuen Ausbau.We are planning the new expansion.
Sie wünschen einen Ausbau.They wish for an expansion.
Er will keinen Ausbau sehen.He doesn't want to see any expansion.
Dativ
Ich helfe dem neuen Ausbau.I help the new expansion.
Er hilft einem Ausbau gern.He likes to help an expansion.
Ich gebe keinem Ausbau Geld.I don't give money to any expansion.
Genitiv
Der Beginn des Ausbaus ist wichtig.The beginning of the expansion is important.
Der Beginn eines Ausbaus ist unklar.The beginning of an expansion is unclear.
Der Beginn keines Ausbaus ist bekannt.The beginning of no expansion is known.

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Frequently asked questions

Everything you might wonder about der, die, das — and the Der Artikel app.

Is it der, die, or das Ausbau?

It is der Ausbau. In German, every noun has a grammatical gender, and Ausbau is masculine. You should always learn the article together with the noun to ensure your German grammar is correct.

What is the plural of der Ausbau?

The plural form of der Ausbau is die Ausbauten. In German, regardless of the singular gender, all plural nouns use the definite article “die.”

What does der Ausbau mean in English?

The German word der Ausbau translates to “extension, consolidation” in English.

How do you decline der Ausbau?

Like all German nouns, Ausbau changes its article depending on the case. In the singular, the forms are:
  • Nominativ: der Ausbau
  • Akkusativ: den Ausbau
  • Dativ: dem Ausbau
  • Genitiv: des Ausbaus

These changes are necessary because German uses cases to indicate the noun’s role in a sentence (such as the subject or object). Knowing these forms allows you to build grammatically correct sentences.