Why does the noun Tagebuch have the article das?

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 Tagebuch

How it changes across the four cases.

CaseDefiniteIndefiniteNegative
Nominativdas Tagebuchein Tagebuchkein Tagebuch
Akkusativdas Tagebuchein Tagebuchkein Tagebuch
Dativdem Tagebucheinem Tagebuchkeinem Tagebuch
Genitivdes Tagebuchseines Tagebuchskeines Tagebuchs

Examples in context

Real sentences using Tagebuch in different cases.

CaseDefiniteIndefiniteNegative
Nominativ
Das alte Tagebuch ist voll.The old diary is full.
Ein neues Tagebuch liegt hier.A new diary lies here.
Kein Tagebuch ist wichtig.No diary is important.
Akkusativ
Ich lese das alte Tagebuch.I read the old diary.
Er schreibt ein neues Tagebuch.He writes a new diary.
Ich habe kein Tagebuch.I have no diary.
Dativ
Ich schreibe in dem Tagebuch.I write in the diary.
Er liest aus einem alten Tagebuch.He reads from an old diary.
Ich vertraue keinem Tagebuch.I trust no diary.
Genitiv
Der Inhalt des Tagebuchs ist geheim.The content of the diary is secret.
Die Seiten eines Tagebuchs sind leer.The pages of a diary are empty.
Der Wert keines Tagebuchs ist gering.The value of no diary is low.

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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 Tagebuch?

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

What is the plural of das Tagebuch?

The plural form of das Tagebuch is die Tagebücher. In German, regardless of the singular gender, all plural nouns use the definite article “die.”

What does das Tagebuch mean in English?

The German word das Tagebuch translates to “diary” in English.

How do you decline das Tagebuch?

Like all German nouns, Tagebuch changes its article depending on the case. In the singular, the forms are:
  • Nominativ: das Tagebuch
  • Akkusativ: das Tagebuch
  • Dativ: dem Tagebuch
  • Genitiv: des Tagebuchs

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.