childish
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childish
In a childlike way that is inappropriate, immature, or silly for adults. Usually used negatively.
Sei nicht so kindisch und hör auf, wegen dieser Kleinigkeit zu schmollen.
Don't be so childish and stop sulking over this little thing.
The adjective is derived from the noun 'das Kind' (child) with the ending '-isch' (-ish). This ending describes a quality or behavior that is typical of something, here often with a negative evaluation.
Seine Reaktion auf die Kritik war ziemlich kindisch.
His reaction to the criticism was pretty childish.
'Kindisch' (childish) is almost always a criticism or reproach. It describes an adult's behavior as immature, silly, or inappropriate, not as positive or innocent.
Hör auf, so kindisch zu sein, und sprich vernünftig mit mir!
Stop being so childish and talk to me sensibly!
'Kindisch' (childish) often describes a behavior or reaction. Typical combinations are 'kindisches Verhalten' (childish behavior), 'eine kindische Reaktion' (a childish reaction), or use with verbs like 'sich benehmen' (to behave) and 'reagieren' (to react).
Er benimmt sich manchmal sehr kindisch, wenn er nicht bekommt, was er will.
He sometimes behaves very childishly when he doesn't get what he wants.
silly
Both „albern“ and „kindisch“ can criticize behavior that is not serious. „Albern“ tends to emphasize exaggerated, often harmless fooling around or clowning. „Kindisch“ judges behavior more clearly as inappropriately immature, especially in adults.
Nach dem Streit redete er aus Trotz nicht mehr mit seinen Freunden, was alle kindisch fanden.
After the argument, he stubbornly stopped speaking to his friends, which everyone thought was childish.
Auf der Feier machten die Freunde alberne Fotos und lachten viel.
At the party, the friends took silly photos and laughed a lot.
