Is Männlein der, die or das?

The correct German article for Männlein is das. The noun Männlein is Neuter. So you always say: das Männlein. Learn the article together with the noun — German nouns don't follow predictable gender rules most of the time.

The plural of Männlein is: die Männlein. In the plural, every German noun takes the article "die". So: die Männlein. Example: ein Männlein → zwei Männlein.

Correct: die Männlein. The form "die Männleins" is wrong. The plural of das Männlein is die Männlein. In the nominative plural, you always use the article "die".

das Männlein follows the four German cases. Nominative: das Männlein, Accusative: das Männlein, Dative: dem Männlein, Genitive: des Männleins. In plural: die Männlein / den Männlein. Learn these forms together with the noun.

The genitive singular of das Männlein is: des Männleins. The genitive plural is der Männlein. German uses the genitive to express possession or belonging. Example: die Farbe des Männleins.

The dative plural of Männlein is: den Männlein. In German, dative plural nouns usually end in "-n". So you say: "mit den Männlein". Use this case after prepositions like mit, von, bei, zu.

Männlein ends in -lein. German nouns with this ending are almost always neuter. Diminutives ending in -lein are always neuter (das). That's why the article for Männlein is das.

Männlein is a noun and must be capitalized in German. You'll find example sentences above for each case. The article das stays the same in nominative singular but changes in other cases. Practice declension in your own sentences.

Yes, Männlein is a noun (also called a substantive). German nouns are always capitalized. The article for Männlein is das. Every German noun has a fixed article you must memorize.