How do I know when to use weak, mixed, or strong adjective endings in German?

It depends on what comes before the adjective . Use weak after definite articles like der/die/das , mixed after indefinite or possessive words like ein/mein , and strong when there is no article at all.

Why does the adjective end in -en so often?

Because -en is the default ending in many forms, especially in dative and plural . In weak declension it appears almost everywhere, and in mixed declension it appears in the plural and in many other cases as well.

What is the hardest part of adjective declension to remember?

A common trap is the genitive singular in strong declension: masculine and neuter adjectives end in -en , not -es . Also remember that ein -words take -er for masculine nominative and -es for neuter nominative/accusative.

Adjective Endings II — The Master Tables 📊

German adjectives follow three distinct declension patterns: Strong (no article present), Weak (after a definite article), and Mixed (after 'ein' or possessives). The ending changes depending on the case, gender, and the specific type of article preceding the adjective.

Infographic detailing all German adjective declension tables for weak, mixed, and strong endings.

Welcome to the deep end of the pool. If you read the Basic Guide, you know the logic. Now let's see the full picture.

There are three main "Declensions" (patterns) depending on what comes before the adjective.

1. Weak Declension (With Definite Article) 🟢

Triggered by: der, die, das, dieser, jener, welcher, jeder, alle

This is the "lazy" mode. The article already shows the strong ending, so the adjective relaxes.

Result: It's almost always -en.
Exceptions: Nominative Singular (and Accusative Fem/Neut) get -e.

Case	Masculine	Feminine	Neuter	Plural
Nom	der gute	die gute	das gute	die guten
Acc	den guten	die gute	das gute	die guten
Dat	dem guten	der guten	dem guten	den guten
Gen	des guten	der guten	des guten	der guten

[!TIP]
Memory Hack: Imagine a "Frying Pan" shape in the table. The handle is the Nominative line (e, e, e), and the rest of the pan is full of -en soup. (Okay, maybe just memorize it: Plural, Dat, Gen = -en).

2. Mixed Declension (With Indefinite Article) 🟡

Triggered by: ein, eine, mein, dein, sein, ihr, unser, euer, ihr, kein

This is "Mixed" because:

In Plural / Dative / Genitive, it acts "Weak" (mostly -en).
In Nominative/Accusative Singular, it acts "Strong" (shows the -er/-es signal) because words like ein or mein have no ending there.

Case	Masculine	Feminine	Neuter	Plural
Nom	ein guter	eine gute	ein gutes	keine guten
Acc	einen guten	eine gute	ein gutes	keine guten
Dat	einem guten	einer guten	einem guten	keinen guten
Gen	eines guten	einer guten	eines guten	keiner guten

Crucial Spots:

Nom Masc: ein guter (Signal -er from der)
Nom/Acc Neut: ein gutes (Signal -es from das)

3. Strong Declension (No Article) 🔴

Triggered by: Nothing (or things like viele, manche, mehrere, einige often trigger this in plural).

The adjective is ALL ALONE. It must carry the full signal of the specific article.

kaltes Wasser (like das)
frische Milch (like die)

Case	Masculine	Feminine	Neuter	Plural
Nom	guter	gute	gutes	gute
Acc	guten	gute	gutes	gute
Dat	gutem	guter	gutem	guten
Gen	guten ⚠️	guter	guten ⚠️	guter

[!WARNING]
The Genitive Trap: You might expect Masc/Neut Genitive to be -es (like des). But it's actually -en.

guten Weines (of good wine).

Why? Because the noun usually adds an -(e)s (Weines), so the signal is already there!

Cheat Sheet Summary 📝

Dative is basically always -en (unless No Article).
Plural is basically always -en (unless No Article).
No Article = Adjective wears the Crown (Article ending).
Ein/Mein words = Watch out for Masc (-er) and Neut (-es) in Nominative!

Now go forth and decline with confidence! 💪

Adjective Endings II — The Master Tables 📊

1. Weak Declension (With Definite Article) 🟢

2. Mixed Declension (With Indefinite Article) 🟡

3. Strong Declension (No Article) 🔴

Cheat Sheet Summary 📝

See also...

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