If you’ve ever stopped mid-sentence trying to work out whether it’s guter, gute, gutes, or guten, welcome to the club — pretty much every German learner hits this wall around A2. German adjective endings trip people up because the “correct” ending isn’t really one rule, it’s three things happening at once: the noun’s gender, its case, and whether there’s an article sitting in front of the adjective. Once you see it as three separate, learnable patterns instead of one big blur, it stops being scary. That’s what this guide walks through, with tables you can actually reference and the same practice habits we use with learners in Linguanest’s German classes.

What Are German Adjective Endings, Really?

Here’s the short version: whenever an adjective sits right in front of a noun, it needs an ending (-e, -er, -es, -en, or -em). Which one depends on the noun’s gender, its case in the sentence, and what kind of article, if any, comes before it. But if the adjective comes after the noun, in a sentence like Der Kaffee ist gut, it stays exactly as it is — no ending, no exceptions. Compare that to der gute Kaffee, where the adjective now sits before the noun and suddenly needs one.

The Three Types of Declension

There are really only three patterns to learn, and which one applies just depends on what (if anything) comes before the adjective.

Strong Declension (No Article)

No article at all in front of the adjective? Then the adjective has to do all the work itself, so it borrows the same endings a der-word would normally carry.

Weak Declension (After Der-words)

After der, die, das, dieser, jeder, or welcher, the article has already made the gender and case obvious, so the adjective can relax. It only ever ends in -e or -en — this is genuinely the easiest of the three, so it’s worth learning first.

Mixed Declension (After Ein-words)

After ein, kein, or a possessive like mein or dein, most endings match the weak pattern above. The catch is that words like ein don’t reveal gender on their own, so in three specific spots — masculine nominative, and neuter nominative/accusative — the adjective has to step in and do that job instead.

None of this will click without a solid grip on the case system underneath it — if cases still feel shaky, our companion guide on German cases (Nominativ, Akkusativ, Dativ, Genitiv) is worth reading first.

Full German Adjective Endings Chart

Mistakes Almost Every Learner Makes

We see the same handful of errors come up again and again in class — if you recognize yourself in one of these, don’t worry, it means you’re paying attention to the right things.

• Putting an ending on adjectives after “sein”: ❌ Der Kaffee ist guter → ✅ Der Kaffee ist gut. If the adjective comes after the verb, it never changes.
• Treating “kein” like it needs no ending on the adjective: ❌ kein gutes Mann → ✅ kein guter Mann — masculine nominative still needs that -er, even with kein in front.
• Dropping the plural -en after der-words: ❌ die gute Kinder → ✅ die guten Kinder.
• Confusing dative with accusative: in the weak and mixed patterns, dative wants -en across every gender — if you’re not sure which case you’re in, check the preposition or verb first, then come back to the ending.

How to Actually Make These Endings Stick

Reading the tables above is the easy part. Getting the endings to come out correctly when you’re speaking, without stopping to think, takes repetition — the right kind of repetition. Here’s what we’ve seen work with our own students in Linguanest’s A2/B1 classes.

Seeing It in Real Sentences

Tables are useful, but the pattern only really clicks once you see it doing its job in an actual sentence:

• Ich trinke gern heißen Tee. (strong, accusative, masculine)
• Die kleine Katze schläft auf dem Sofa. (weak, nominative, feminine)
• Er hat ein neues Auto gekauft. (mixed, accusative, neuter)
• Wir sprechen mit den netten Nachbarn. (weak/mixed dative plural, -en)

Frequently Asked Questions

Further Reading & Sources