Introduction to Adjective Endings

In German, adjectives change their endings depending on the gender, case, and number of the noun they describe, as well as the type of article preceding them. These endings are important because they provide grammatical information that helps clarify the role of the adjective and noun in the sentence.

There are three main types of adjective endings: strong, weak, and mixed. Understanding when to use each type is essential for correct German grammar.

Ein schöner Tag.

Ayn shøːnɐ taːk.

A beautiful day.

Der schöne Tag.

Deːɐ̯ ʃøːnə taːk.

The beautiful day.

Strong Adjective Endings

Strong adjective endings are used when there is no definite article before the adjective, often after indefinite articles (ein, eine) or no article at all. The adjective takes endings that indicate the gender, case, and number of the noun.

Here is the strong ending table for nominative, accusative, dative, and genitive cases:

CaseMasculineFeminineNeuterPlural
Nominative-er-e-es-e
Accusative-en-e-es-e
Dative-em-er-em-en
Genitive-en-er-en-er

Ich sehe einen großen Hund.

ɪç zeːə ˈaɪ̯nən ˈɡroːsən hʊnt.

I see a big dog.

Sie liest gutes Buch.

ziː liːst ˈɡuːtəs buːx.

She is reading a good book.

Weak Adjective Endings

Weak adjective endings are used when the adjective follows a definite article (der, die, das) or a similar word that already indicates the case, gender, and number. The adjective endings in this case are simpler and mostly limited to -e or -en.

Here is the weak adjective endings table:

CaseMasculineFeminineNeuterPlural
Nominative-e-e-e-en
Accusative-en-e-e-en
Dative-en-en-en-en
Genitive-en-en-en-en

Der schöne Garten ist groß.

deːɐ̯ ˈʃøːnə ˈɡaʁtən ɪst ɡroːs.

The beautiful garden is big.

Ich mag die alten Bücher.

ɪç maːk diː ˈaltən ˈbyːxɐ.

I like the old books.

Mixed Adjective Endings

Mixed adjective endings appear when the adjective follows an indefinite article (ein, eine) or a possessive determiner (mein, dein) that only partially indicates gender, case, or number. The adjective then takes endings that combine elements of both strong and weak endings.

Here is a mixed endings table:

CaseMasculineFeminineNeuterPlural
Nominative-er-e-es-en
Accusative-en-e-es-en
Dative-en-en-en-en
Genitive-en-en-en-en

Ein guter Mann.

aɪ̯n ˈɡuːtɐ man.

A good man.

Meine nette Freundin.

ˈmaɪ̯nə ˈnɛtə ˈfʁɔʏndɪn.

My nice girlfriend.

Adjective Endings by Cases and Genders

Adjective endings change according to the grammatical case (nominative, accusative, dative, genitive) and the gender (masculine, feminine, neuter) or number (singular, plural) of the noun.

It is essential to know the noun’s gender and the case it is in to apply the correct adjective ending.

Ich gebe dem kleinen Kind ein Buch.

ɪç ˈɡeːbə deːm ˈklaɪ̯nən kɪnt aɪ̯n buːx.

I give the small child a book.

Die schöne Blume ist rot.

diː ˈʃøːnə ˈbluːmə ɪst ʁoːt.

The beautiful flower is red.

Remember that the definite article usually carries the grammatical information, so the adjective endings are weaker, while without the article, the adjective takes strong endings to show this information.

Common Mistakes

Many learners confuse when to use strong, weak, or mixed adjective endings. A common mistake is using weak endings with indefinite articles or no articles, which requires strong endings.

Another frequent error is forgetting the plural endings and case distinctions, especially in dative and genitive forms.

Incorrect: Ich sehe ein schön Hund.

ɪç ˈzeːə aɪ̯n ʃøːn hʊnt.

Incorrect: I see a beautiful dog.

Correct: Ich sehe einen schönen Hund.

ɪç ˈzeːə ˈaɪ̯nən ˈʃøːnən hʊnt.

Correct: I see a beautiful dog.

Practice Examples

Try identifying the correct adjective endings in these sentences:

Der kluge Schüler liest das neue Buch.

deːɐ̯ ˈkluːɡə ˈʃyːlɐ liːst das ˈnɔʏ̯ə buːx.

The smart student reads the new book.

Eine schöne Stadt liegt am Fluss.

ˈaɪ̯nə ˈʃøːnə ʃtat liːkt am flʊs.

A beautiful city lies on the river.

Wir danken unseren lieben Freunden.

viːɐ̯ ˈdaŋkn̩ ˈʊnzəʁən ˈliːbən ˈfʁɔʏndən.

We thank our dear friends.

Tips for Remembering Rules

Here are some useful tips to help you master German adjective endings:

  • Learn the definite and indefinite articles well, as they guide which adjective endings to use.
  • Memorize the adjective endings charts for strong, weak, and mixed endings.
  • Focus on the case and gender of the noun first, then decide on the article type.
  • Practice with real sentences and pay attention to adjective endings in context.
  • Use mnemonic devices to remember tricky endings, especially dative and genitive forms.

Consistent practice and exposure to German texts will make applying adjective endings more intuitive over time.