German Adjective Endings Made Simple: The Only Guide You Need

German adjective endings feel like the final boss of grammar — but they follow a clear, three-pattern system, not random rules. Once you see the logic, you can stop guessing. This guide gives you the three patterns, the full tables, the shortcuts and a quiz to lock it in.

First, the easy part: when adjectives take NO ending

An adjective that comes after the noun (a predicate adjective) never takes an ending at all:

• Das Haus ist groß. — The house is big.
• Die Frau ist nett. — The woman is nice.

Endings only appear when the adjective sits before the noun: das große Haus, die nette Frau. That is what the rest of this guide is about.

The one idea that explains everything

An adjective in front of a noun helps signal the noun’s gender and case. How hard it works depends on whether the word before it already gives that signal:

• After a der-word (der, die, das, dieser, jeder, welcher, alle…) the gender and case are already clear, so the adjective relaxes — weak endings, only -e or -en.
• After an ein-word (ein, kein, mein, dein, sein, ihr, unser…) the article sometimes shows no ending, so the adjective steps in — mixed endings.
• With no article at all, the adjective does all the work — strong endings that mirror the der-word.

Pattern 1 — Weak endings (after der-words)

Only ever -e or -en. This is the easiest pattern.

Pattern 2 — Mixed endings (after ein-words)

Same as weak, except the adjective takes a strong ending where ein shows no gender: nominative masculine (-er) and nominative/accusative neuter (-es).

Pattern 3 — Strong endings (no article)

With no article, the adjective carries the der-word ending itself: guter Wein, kaltes Wasser, frische Milch. The one exception: in the genitive masculine and neuter the ending is -en (because the noun already ends in -s).

The shortcuts that make this manageable

• Master nominative and accusative first. They cover most of what you say early on.
• Dative and genitive are almost always -en (in the weak and mixed patterns). When in doubt there, guess -en and you will usually be right.
• Strong endings copy the article you would have used (der→-er, das→-es, die→-e, dem→-em…), so if you know your cases, you already know them.

The mistakes to avoid

1. Dropping the ending entirely on an adjective before a noun (“gut Wein” → it must be guter Wein).
2. Using -e everywhere in the weak pattern and forgetting that accusative masculine is -en (den guten Mann).
3. Forgetting the strong -er/-es when there is no article (kaltes Wasser, not “kalte Wasser”).

How to actually master adjective endings

Do not memorise the tables in isolation — learn short chunks you will actually say: ein guter Kaffee, frische Milch, mit dem neuen Auto. Drill nominative and accusative until they are automatic, default to -en in the dative and genitive, and practise out loud with someone who corrects you. This is exactly the kind of pattern that clicks with a little structured practice.

Test yourself: the adjective endings quiz

Add the correct ending in each phrase. Every answer explains the pattern — come back and beat your score.

Frequently asked questions

Do I have to memorise all three tables?
Start with the weak pattern and the nominative and accusative of the mixed pattern — that covers most everyday German. The strong endings come naturally with reading and listening.

Why is it “ein guter Mann” but “der gute Mann”?
Because der already shows masculine nominative, so the adjective relaxes to -e. Ein shows no ending there, so the adjective adds the -er to carry the signal.

Is there a quick rule for dative and genitive?
Yes — in the weak and mixed patterns the ending is almost always -en. Learn nominative and accusative properly and default to -en elsewhere.

Adjective endings build on two things you can review here: the cases and noun genders. New here? Start here.