What is the German N-Declension, and when do I use it?

The N-Declension applies to certain masculine nouns that take -n or -en in every case except nominative singular . So you say der Junge , but den Jungen , dem Jungen , and des Jungen .

Which nouns usually follow the N-Declension pattern?

It mostly affects masculine nouns for male people , especially those ending in -e like der Kunde or der Neffe , and many titles/professions ending in -ist, -ent, -ant like der Student or der Präsident . There are also a few irregulars such as der Name , der Herr , and the neuter exception das Herz .

How can I tell if a form like 'den Studenten' is singular or plural?

You must look at the article : den Studenten is singular, while die Studenten is plural. The noun form may look similar, but the article tells you the number and case.

N-Declension — The Weak Nouns 🥀

The N-Declension applies to group of 'weak' masculine nouns that require an extra -(e)n ending in all cases except the Nominative singular. Common examples include nationalities (der Franzose), certain animals (der Junge, der Bär), and professions (der Student).

Infographic detailing German N-Declension (Weak Nouns) where masculine nouns add -n in most cases.

Just when you thought you understood the Cases, German throws a curveball: N-Declension.
Also known as "Weak Nouns".

These are specific masculine nouns that are "weak" and need extra support.
They add an extra -n (or -en) in every case except Nominative Singular.

The Pattern 📉

Let's look at the word der Junge (the boy).

Case	Singular	Plural
Nom	der Junge	die Jungen
Acc	den Jungen	die Jungen
Dat	dem Jungen	den Jungen
Gen	des Jungen	der Jungen

Wait, what?

Ich sehe den Jungen. (I see the boy).
Ich sehe die Jungen. (I see the boys).
Context is key! You have to look at the article (den vs die) to know if it's one boy or many.

Which words are "Weak"? 🏥

Almost all N-Declension nouns are Masculine.

Group 1: Male People ending in -e 👨

der Junge (boy)
der Kollege (colleague)
der Kunde (customer)
der Neffe (nephew)
der Experte (expert)

Group 2: Titles/Professions ending in -ist, -ent, -ant 🎓

der Polizist (policeman) ➔ den Polizisten
der Student (student) ➔ den Studenten
der Präsident (president) ➔ den Präsidenten
der Elefant (elephant) ➔ den Elefanten

Group 3: The Weirdos (Irregular) 🤪

der Name (the name) ➔ des Namens (Genitive gets an extra S!)
das Herz (the heart) ➔ The only Neuter one! (des Herzens).
der Herr (mr/gentleman) ➔ den Herrn (Singular), die Herren (Plural).

Why does this happen?

Historically, these words used to have endings in all cases. Over centuries, German lost most of them, but these "weak" nouns held onto their "n".

[!TIP]
Don't stress too much. If you forget the -n (Ich sehe den Student), people will understand you perfectly. It's a B1/B2 level detail. But if you want to sound polished, add the N!

Common Mistake: Is it Plural? 🤔

Be careful!

Ich sehe den Studenten. (Singular! Den + -n).
Ich sehe die Studenten. (Plural! Die + -n).
The noun looks exactly the same. The Article tells the truth. ALWAYS look at the article.