The four German cases

German marks the role a noun plays in a sentence not by word order but by case — a change to the article (and sometimes the noun or adjective) that signals whether something is the subject, the object, the recipient, or the owner. English used to do more of this and now does almost none of it, which is exactly why the concept feels foreign even though English pronouns still show a fossil of it: "he" becomes "him" as an object the same way er becomes ihn. German just kept the whole system and extended it to articles and adjectives too.

There are four cases: nominative, accusative, dative, and genitive. Each one answers a different question about a noun's job in the sentence, and learning to ask that question is more useful than memorizing the label.

Nominative: the subject

The nominative is the case of the subject — whoever or whatever is doing the verb. It's also the case a noun sits in when you look it up in a dictionary or name it in isolation, which is why it's the default you learn a word in and the one every other case is described relative to.

Der Hund bellt. (The dog barks.) Der Hund is nominative because it's the one doing the barking. If you can ask "who or what is doing this?" and the noun answers, it's nominative.

Accusative: the direct object

The accusative marks the direct object — the thing directly affected by the verb's action. Ich sehe den Hund. (I see the dog.) The dog isn't doing anything here; it's what's being seen. The question to ask is "who or what is being verbed?"

Only one gender changes its article between nominative and accusative in the singular: masculine. Der Hund becomes den Hund. Feminine, neuter, and plural articles stay identical in both cases, which is part of why accusative feels like a smaller step than it is — the visible change only shows up on one gender in four.

Dative: the indirect object

The dative marks the indirect object — typically the recipient, the person something is given to, done for, or said to. Ich gebe dem Hund einen Knochen. (I give the dog a bone.) The bone is what's given (accusative), the dog is who receives it (dative). The question is "to whom or for whom?"

Dative changes the article on every gender and on the plural, and it's the case most likely to trip up a learner who's only drilled nominative and accusative, because it doesn't just tweak the masculine form — it touches everything.

Genitive: possession

The genitive marks possession — "of the," or an apostrophe-s in English. Das Haus des Mannes. (The man's house / the house of the man.) It also shows up after a small set of prepositions (während, trotz, wegen) and after certain fixed expressions.

Genitive is the case most worth being honest about: in spoken German, it's fading. Native speakers increasingly replace it with von plus dative — das Haus vom Mann rather than das Haus des Mannes — especially in casual speech. Formal writing, legal and academic German, and fixed phrases still use the genitive properly, and wegen in particular is often taught and used with genitive by careful speakers even as wegen dem (dative) spreads in casual use. The practical takeaway: recognize the genitive when you read it, know that von + dative is a safe substitute in speech, and don't let a shaky grip on genitive block you from communicating — it's the one case where reaching for the workaround is not a mistake, it's what fluent speakers actually do.

The article tables

Here is how the definite article (der/die/das) changes across all four cases:

Two things worth noticing in that table. First, feminine and neuter are identical in nominative and accusative — only masculine moves. Second, dative plural adds an -n to the noun itself unless the plural already ends in -n or -s: mit den Kindern, mit den Freunden, but mit den Autos and mit den Frauen stay as they are.

The indefinite article (ein/eine) follows the same case logic, with the complication that it has no plural form of its own (German just drops the article for indefinite plurals: Hunde, not eine Hunde):

Compare the two tables and the pattern is the same shape — ein just swaps in for der, eine for die, with the endings themselves nearly identical (-en, -em, -er, -es) across both.

How to know which case a sentence needs

Two things decide case, and neither of them is word order.

The verb decides. Most verbs take a nominative subject and an accusative object, and that's the default to assume. Some verbs, though, take a dative object instead of accusative even though they look like ordinary transitive verbs — helfen (to help), danken (to thank), gefallen (to please), and folgen (to follow) are common ones. Ich helfe dir (I help you) uses dative dir, not accusative dich, even though "help" feels like a direct-object verb in English. There's no shortcut here beyond learning which verbs are dative verbs as you meet them — it's a property of the specific verb, not something you can derive from the sentence's meaning.

Prepositions decide. A closed set of prepositions always takes accusative (durch, für, gegen, ohne, um, among others), another set always takes dative (aus, bei, mit, nach, seit, von, zu, among others), and a third set — the two-way prepositions like in, an, auf — takes accusative or dative depending on whether the sentence describes motion toward a place or a static location. The prepositions and cases guide covers the full lists for each group.

Personal pronouns shift too

Pronouns carry the same case system as articles, and because they're used constantly, the shifts are worth knowing by heart rather than deriving each time:

Er sieht mich. (He sees me.) Ich gebe ihm das Buch. (I give him the book.) Er is doing the seeing in the first sentence, so it stays nominative; when er becomes the object of a sentence, or the recipient, it changes shape the same way der does on an article — into ihn for accusative, ihm for dative. Practicing these pronoun pairs together, the way you'd practice der/den/dem for an article, pays off faster than most other case drilling, because pronouns show up in nearly every sentence you'll ever produce.

Case also decides adjective endings when an adjective sits in front of a noun — a related but separate system covered in the adjective endings guide, since the ending depends on the case, the gender, and which article (if any) precedes the adjective.

How WunderDict helps

Cases aren't something a dictionary entry can hand you directly — they depend on the sentence, not the word in isolation. But knowing a noun's gender, which WunderDict fills in the moment you look a word up, is the first input every case table above needs: pick the wrong gender and the whole declension goes with it.

For deliberate practice, WunderDict's Case Picker drills exactly this: given a sentence, choose the article in the case it actually needs. It's part of the same free-account practice suite as the rest of WunderDict's quizzes — guest mode covers search and list-building, but scored practice needs an account. See the other guides for more on German grammar, grounded in the dictionary's own data.