Weak Nouns
All so-called "weak" nouns in German are masculine, and their "weakness" is their willingness to change their ending by adding "(e)n" whenever they appear in a case other than nominative. This basically means that these nouns all end with "en" when they appear in these other cases, which is important to know because that ending can make these nouns seem plural when they are not (e.g. "der Mensch," "human," "pl. die Menschen," but also sing.akk "den Menschen"). The table below shows several examples, but if you crave further details, you can visit Grimm Grammar.
English | Nom. | Akk. | Dat. | Gen. |
student | der Student | den Studenten | dem Studenten | des Studenten |
thought | der Gedanke | den Gedanken | dem Gedanken | des Gedanken |
nephew | der Neffe | den Neffen | dem Neffen | des Neffen |
(male) customer | der Kunde ein Kunde | den Kunden | dem Kunden | des Kunden |
boy | der Junge | den Jungen | dem Jungen | des Jungen |
human, man | der Mensch | den Menschen | dem Menschen | des Menschen |
belief | der Glaube | den Glauben | dem Glauben | des Glauben |
(male) Christian | der Christ | den Christen | dem Christen | des Christen |
(male) psychologist | der Psychologe | den Psychologen | dem Psychologen | des Psychologen |