Adjective Endings after der, die, das

After the definite article (der, die, das) and the words that work like it (dieser, jeder, welcher, alle), the article already shows the case. The adjective only needs two endings:

• -e in the nominative singular of all genders and in the accusative of feminine and neuter nouns: der neue Kollege, die alte Brücke, wir nehmen das kleine Zimmer.
• -en everywhere else: the masculine accusative (den roten Pullover), the whole dative (mit dem kleinen Hund), the whole genitive (des neuen Lehrers) and the whole plural (die jungen Leute).

Tip: nominative der/die/das or accusative die/das in the singular → -e. Everything else → -en.