Why does the noun Irrtum 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 Irrtum

How it changes across the four cases.

CaseDefiniteIndefiniteNegative
Nominativder Irrtumein Irrtumkein Irrtum
Akkusativden Irrtumeinen Irrtumkeinen Irrtum
Dativdem Irrtumeinem Irrtumkeinem Irrtum
Genitivdes Irrtumseines Irrtumskeines Irrtums

Examples in context

Real sentences using Irrtum in different cases.

CaseDefiniteIndefiniteNegative
Nominativ
Der Irrtum ist groß.The error is big.
Ein Irrtum passiert oft.An error happens often.
Kein Irrtum ist perfekt.No error is perfect.
Akkusativ
Ich sehe den Irrtum.I see the error.
Er macht einen Irrtum.He makes an error.
Sie findet keinen Irrtum.She finds no error.
Dativ
Ich lerne aus dem Irrtum.I learn from the error.
Er glaubt einem Irrtum.He believes an error.
Ich folge keinem Irrtum.I follow no error.
Genitiv
Die Ursache des Irrtums ist klar.The cause of the error is clear.
Der Beginn eines Irrtums ist klein.The beginning of an error is small.
Die Folge keines Irrtums ist gut.The consequence of no error is good.

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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 Irrtum?

It is der Irrtum. In German, every noun has a grammatical gender, and Irrtum 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 Irrtum?

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

What does der Irrtum mean in English?

The German word der Irrtum translates to “mistake, error” in English.

How do you decline der Irrtum?

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

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.