Mixed Adjective Endings Across Cases

Level 3

Mixed declension applies when an adjective follows an indefinite article (ein), a negative article (kein), or a possessive (mein, dein, etc.). It uses 'strong' endings to show gender in three specific gaps (Masculine Nom., Neuter Nom., Neuter Acc.) and 'weak' endings (-en/-e) everywhere else.

How It Works

The mixed paradigm is a hybrid system used after ein-words. It is essentially the weak declension with three specific exceptions where the adjective must carry the 'strong' signal because the article is uninflected (bare).

1. The Three 'Strong' Gaps:
In these three cases, the article (ein/mein/kein) has no ending, so the adjective takes the ending of the definite article:

  • Masculine Nominative: ein guter Mann (signals der)
  • Neuter Nominative: ein gutes Kind (signals das)
  • Neuter Accusative: ein gutes Kind (signals das)

2. The Weak Endings:
In all other cases (Feminine, Dative, Genitive, and Masculine Accusative), the article already has a clear ending (e.g., eine, einem, einen). Therefore, the adjective follows the weak pattern, usually taking -en (or -e for Feminine Nominative/Accusative).

3. The Plural Rule:
Since 'ein' has no plural, this paradigm applies to kein and possessives in the plural. In the plural, the adjective always takes the weak ending -en (e.g., meine neuen Bücher).

Examples (5)

  1. Das ist ein großer Hund.

    That is a big dog.

    Word by Word: That is a big dog.

    Masculine Nominative: 'ein' has no ending, so the adjective takes the strong '-er' to signal the masculine gender.

  2. Ich habe ein neues Auto.

    I have a new car.

    Word by Word: I have a new car.

    Neuter Accusative: 'ein' is bare, so the adjective takes the strong '-es' to signal the neuter gender.

  3. Er hilft seiner alten Mutter.

    He is helping his old mother.

    Word by Word: He helps his old mother.

    Dative Feminine: The possessive 'seiner' already signals the case, so the adjective takes the weak '-en' ending.

  4. Wir suchen unseren kleinen Schlüssel.

    We are looking for our small key.

    Word by Word: We search our small key.

    Masculine Accusative: 'unseren' signals the case, so the adjective takes the weak '-en' ending.

  5. Keine neuen Nachrichten sind gute Nachrichten.

    No new news is good news.

    Word by Word: No new news are good news.

    Plural: After 'keine', the adjective in the plural always takes the weak '-en' ending.

Common Mistakes

  • Forgetting the strong ending when the article is bare (the 'gap').

    Ein gut Mann.
    Ein guter Mann.

    Because 'ein' has no ending here, the adjective MUST take the '-er' ending to show that the noun is masculine nominative.

  • Using strong endings in the plural after 'keine' or possessives.

    Meine gute Freunde.
    Meine guten Freunde.

    In the plural mixed declension, the adjective always takes the weak '-en' ending, not the strong '-e' ending.

  • Adding endings to predicate adjectives (adjectives after the verb).

    Mein Auto ist neues.
    Mein Auto ist neu.

    Adjectives only take these endings when they stand directly before a noun. If they follow a verb like 'sein', they remain undeclined.

How It Connects

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Mixed Adjective Endings Across CasesLevel 3

Learn This First

To learn the full paradigm of mixed adjective endings, a learner needs to be comfortable with the four-case system (nominative, accusative, dative, and genitive) and how 'ein-words' (indefinite articles, negative articles, and possessives) behave in those cases. This pattern builds directly on the basic mixed adjective rules by extending them to the dative and genitive cases.

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Patterns that build on this one.