German adjective endings — the system nobody teaches well
Most German courses present adjective endings as three tables to memorise. That works — but it is slow and fragile. This page teaches the underlying rule first, then shows the tables as a confirmation of what you already understand.
The whole system, eight cards
Adjective endings at a glance
Swipe through the visual walkthrough — the mental model, all three tables, the one trick that ties them together, and the mistakes to avoid.
Why adjective endings feel impossible
There are 48 cells across three tables. But count the distinct endings: roughly 80% of cells are either -e or -en. The "strong" endings — the ones that carry gender and case information — only appear in a small set of predictable slots. The problem is not the number of endings; it is that most courses do not explain why those slots are where they are.
Learn the rule first, then look at the tables. With the rule, each cell is a logical consequence rather than a separate item to memorise. The tables become a quick-check reference, not 48 facts to recall under pressure.
A second common confusion: many learners add endings to adjectives that come after sein or werden — the so-called predicate adjectives. Those never inflect. The distinction between attributive (before noun) and predicate (after sein) is explained explicitly below.
The one-strong-marker rule
Every noun phrase gets exactly one strong gender/case marker — the article carries it, or the adjective does. Never both, never neither.
Article present
der alte Mann
"der" carries the strong signal → adjective takes weak -e ending
No article
alter Mann
No article → adjective must take the strong -er ending itself
Indefinite article
ein alter Mann
"ein" is gender-ambiguous here → adjective takes strong -er to signal masculine
Table 1 — After definite article
The definite article (der/die/das/den/dem/des) always shows the full case and gender signal. The adjective job is done — it just adds a weak ending: -e in Nominativ and selected Akkusativ forms, -en everywhere else.
| Case | Masculine | Feminine | Neuter | Plural |
|---|---|---|---|---|
| Nominativ | -e | -e | -e | -en |
| Akkusativ | -en | -e | -e | -en |
| Dativ | -en | -en | -en | -en |
| Genitiv | -en | -en | -en | -en |
Example
- der große Hund
- die große Katze
- das große Haus
After the definite article — the article already shows the case, so the adjective takes a weak ending.
Table 2 — After indefinite article
"ein" is gender-ambiguous: "ein Buch" could be masculine or neuter, and "ein Mann" looks the same in Nominativ and Akkusativ for neuter. In those ambiguous slots, the adjective steps in with a strong ending to carry the gender/case information the article omits.
| Case | Masculine | Feminine | Neuter | Plural |
|---|---|---|---|---|
| Nominativ | -er | -e | -es | -en |
| Akkusativ | -en | -e | -es | -en |
| Dativ | -en | -en | -en | -en |
| Genitiv | -en | -en | -en | -en |
Example
- ein großer Hund
- eine große Katze
- ein großes Haus
After the indefinite article — the adjective must show gender in Nominativ masc. and Nom./Akk. neut. (strong slots).
Table 3 — Without article
No article at all — nothing carries the gender/case signal. The adjective must do it in every cell. The endings are the same as the definite article forms: der → -er, die → -e, das → -es, dem → -em. If you know the articles, you already know these endings.
| Case | Masculine | Feminine | Neuter | Plural |
|---|---|---|---|---|
| Nominativ | -er | -e | -es | -e |
| Akkusativ | -en | -e | -es | -e |
| Dativ | -em | -er | -em | -en |
| Genitiv | -en | -er | -en | -er |
Example
- großer Hund
- große Katze
- großes Haus
No article — the adjective takes all the strong endings to carry case and gender information.
Comparatives and superlatives — the regular pattern
Most adjectives follow a regular pattern: add -er for the comparative and am -(e)sten for the superlative. One-syllable adjectives with a, o, or u often umlaut in the comparative — but not always. The exceptions matter and are listed below.
Note: adjectives ending in -t, -d, -s, -ß, -z insert an -e- before the superlative -sten: "am ältesten", "am heißesten".
Irregular comparatives — the five to memorise
Five very common adjectives have irregular comparative and superlative forms that must be learned individually:
| Base | Meaning | Comparative | Superlative |
|---|---|---|---|
| gut | good | besser | am besten |
| viel | much / many | mehr | am meisten |
| hoch | high | höher | am höchsten |
| nah | near / close | näher | am nächsten |
| gern | gladly / like to | lieber | am liebsten |
Adjectives that don't take an umlaut
Several one-syllable adjectives with a, o, u look like they should umlaut in the comparative but do not. These must be memorised:
| Base | Meaning | Comparative | Superlative |
|---|---|---|---|
| bunt | colourful | bunter | am buntesten |
| froh | glad / happy | froher | am frohsten |
| voll | full | voller | am vollsten |
| rund | round | runder | am rundsten |
| wahr | true | wahrer | am wahrsten |
| flach | flat | flacher | am flachsten |
| klar | clear | klarer | am klarsten |
Predicate vs attributive adjectives
The single most common adjective mistake is applying an ending where none is needed. Adjectives split into two types depending on their position: those before a noun (attributive) always need endings; those after a linking verb (predicate) never do.
Attributive — before noun
Der große Hund bellt.
"große" — adjective before noun, takes -e ending (definite table, Nom masc)
Predicate — after sein
Der Hund ist groß.
"groß" — after sein, no ending at all regardless of gender or case
The test is positional: is the adjective sitting directly in front of a noun? If yes, it takes an ending. Does it come after sein, werden, bleiben, wirken, or aussehen? Then it is predicative — zero ending, regardless of gender or case.
More examples:
- Die kleine Katze schläft. (attributive — before noun)
- Die Katze ist klein. (predicate — no ending)
- Ich kaufe ein neues Auto. (attributive — indef. article, neut. Akk)
- Das Auto wirkt neu. (predicate — no ending)
Common adjective ending mistakes
Der Hund ist große → Der Hund ist groß
Only attributive adjectives (before nouns) take endings. Predicate adjectives after sein, werden, bleiben never inflect.
ein alte Mann → ein alter Mann
'ein' leaves the masculine Nom slot open, so the adjective must fill it. The indefinite article table exists precisely because 'ein' is gender-ambiguous in certain slots.
ein schneller Auto → ein schnelleres Auto
Comparatives used attributively still need endings. The -er of the comparative is part of the stem — then add the declension ending on top.
fröher, bünter → froher, bunter
Not all one-syllable adjectives take an umlaut in the comparative. When unsure, check the reference list of no-umlaut adjectives.