The grammatical function of a noun, pronoun, or adjective in a sentence.
German has four cases: nominative (subject), accusative (direct object), dative (indirect object), and genitive (possession).
Examples
Nominative:
Der Mann schläft.
The man is sleeping.
Accusative:
Ich sehe den Mann.
I see the man.
Dative:
Ich gebe dem Mann das Buch.
I give the book to the man.
Genitive:
Das ist das Buch des Mannes.
That is the man's book.
See also
Declension
Inflected adjective
Nominative
Accusative
Dative
Genitive
