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How to use indefinite articles in German?

By: Ulrike Carlson Tue Jun 24 2025
German
Determiners, Articles, Cases

In German, we use indefinite articles much like you would use “a” or “an” in English — to introduce a nonspecific or unfamiliar .

Imagine seeing a tiger running down the street. What would you do? In German, you’d yell Ein Tiger!”, using the indefinite article ein. Why? You don’t know that tiger or where it came from, so it’s unfamiliar.

A photo of a tiger against a black background.

In English, the indefinite article has only two forms, “a” or “an,” but in German indefinite articles have several different forms, like ein, eine, or einen. Keep reading and learn how to always pick the correct form!

What are the forms of the German indefinite article?

The German indefinite article can take several forms, depending on the case and gender of the noun:

Case of the noun
Gender of the noun
Masculine
Feminine
Neuter
Nominative

ein

eine

ein

Accusative

einen

eine

ein

Dative

einem

einer

einem

Genitive

eines

einer

eines

Like in English, we don’t use German indefinite articles before plural nouns (unless they’re negative!)

  • Gender You might already know that German nouns are differentiated by grammatical gender. A noun’s grammatical gender can be either masculine, feminine, or neuter.

  • Case → In German, a noun’s “case” is determined by its grammatical role in the sentence. The most common uses are summarized below, but these descriptions will not cover every case

Notice, in the example below, how the indefinite article changes form depending on whether the noun is the subject or the direct object:

  • indefinite articlesubject (nominative)

    Ein Tiger rennt über die Straße.

    A tiger is running across the street.

  • indefinite articledirect object (accusative)

    Ich sehe einen Tiger.

    I’m seeing a tiger.

How to learn the indefinite articles in German?

The best way to learn the indefinite articles in German is to remember that the indefinite articles consist of a dictionary form, ein, and sometimes one of five endings: -e, -n, -m, -r, -s. These are all the forms you will need:

ein, eine, einen, einem, einer, eines

Notice that you need to insert an -e- before the endings -r, -n, -m and -s. This aids the pronunciation by avoiding unpronounceable forms like einm.

To remember which form to use when, you can again use the mnemonic that we introduced in our post on German definite articles:

RESE

NESE

MRMN

SRSR

How to pronounce this?
You say: “Ree-see, nee-see, merman, sir sir!”

However, as we saw for a couple of other forms (e.g. German possessive adjectives), for indefinite articles we need to change the mnemonic a little bit to look more like this:

E_E

NE_E

MRMN

SRSR

What do the gaps mean?
The gaps represent the absence of an ending.

Each section of the mnemonic represents one row (case) in the “table.” Remember you won’t need the last letter in each group, because there are no plural indefinite articles in German!

Case
Masculine
Feminine
Neuter
Plural
(not used for indefinite articles!)
Mnemonic
Nominative

ein_

einE

ein_

(E)

_E_E

Accusative

eineN

einE

ein_

(E)

NE_E

Dative

eineM

eineR

eineM

(N)

MRMN

Genitive

ein_

einE

ein_

(E)

SRSR

Here are a couple more hints to help you remember the forms:

  • In the nominative, dative, and genitive cases, masculine and neuter indefinite articles are identical.

  • For the feminine indefinite article you only need to remember two endings: -E and -R.

Examples of German indefinite articles in sentences

Take a look at the additional examples of the indefinite articles used in sentences below. We will see how the articles change by using the feminine noun die Katze(the cat), the masculine nouns der Vogel(the bird) and der Hund(the dog), and the neuter nouns das Pferd(the horse) and das Kind(the child).

Indefinite articles with nouns in the nominative case (_E_E)
  • indefinite article (nominative)femininemasculine

    Eine Katze und ein Vogel sitzen auf dem Baum.

    A cat and a bird are sitting on the tree.

  • indefinite article (nominative)neuter

    Ein Pferd steht auf der Weide.

    A horse is standing in the pasture.

Indefinite articles with nouns in the accusative case (NE_E)
  • indefinite article (accusative)feminine

    Ich sehe eine Katze.

    I’m seeing a cat.

  • indefinite article (nominative)neutermasculine

    Ich sehe auch ein Pferd und einen Hund.

    I also see a horse and a dog.

Indefinite articles used with nouns in the dative case (MRMN)
  • indefinite article (dative)neuter

    Ich will einem Kind den Luftballon schenken.

    I want to give the balloon to a child.

  • indefinite article (dative)feminine

    Er möchte einer Katze ein neues Zuhause geben.

    He wants to give a new home to a cat.

Indefinite articles used with nouns in the genitive case (SRSR)
  • indefinite article (genitive)feminine

    Das Fell einer Katze ist weich.

    The fur of a cat is soft.

  • indefinite article (genitive)neuter

    Das Fell eines Pferds ist seidig.

    The fur of a horse is silky.

Indefinite plural nouns → no indefinite article!
  • femininemasculine

    Ich sehe Katzen und Vögel.

    I see cats and birds.

  • neuter

    Pferde stehen auf der Weide.

    Horses are standing in the pasture.

How to negate the indefinite article in German?

In most cases, German uses the word nicht(not) for negation, but you can’t use nicht in front of an indefinite article. Instead, the indefinite article itself has a special negative form. It’s easy-peasy: just add the letter k- to the start of any form of the indefinite article!

Case
Masculine
Feminine
Neuter
Plural!
Mnemonic
Nominative

Kein

KeinE

Kein

KeinE

_E_E

Accusative

KeineN

KeinE

Kein

KeinE

NE_E

Dative

KeineM

KeineR

KeineM

KeineN

MRMN

Genitive

ein_

einE

ein_

(E)

SRSR

Important

Did you notice? Unlike the main form of the indefinite article, the negated indefinite article does have a plural form! We use it talk about the absence of all instances of something:

Es gibt keine Tische.

There are no tables.

Take a look at these examples with a negated noun and an indefinite article:

  • Subject:
    feminine

    Keine Katze kann diese Maus fangen.

    No cat can catch this mouse.

  • Direct object:
    masculine

    Ich sehe keinen Hund.

    I don’t see a dog.

  • Direct object (plural):
    plural

    Ich sehe keine Tiere hier.

    I don’t see animals here.

  • Indirect object:
    neuter

    Ich will keinem anderen Kind meine Bonbons geben.

    I want to give my candy to no other child.

  • Genitive attribute:
    plural

    Der Akku keines Handys hält länger als eine Woche.

    The battery of no cell phone stays charged for more than a week.

Summing up

In this article, we’ve seen:

  • Indefinite articles are used to identify one possible instance of a noun.

  • The German indefinite articles are formed by combining the dictionary form, ein, with (sometimes) an ending which shows the case and gender of the noun.

  • The mnemonic _E_E — NE_E — MRMN — SRSR helps with remembering the endings of the indefinite article forms.

  • Negate the indefinite article by adding the letter k- at the beginning.

Ready to use what we have discussed? We have created some German indefinite article exercises for you to practice! Happy learning!

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