This is the 10439th most frequent German word.
quatsch
Nonsense.
In this sentence, 'Quatsch' is used to denote something that is senseless or ludicrous as an exclamation.
Das ist doch Quatsch!
That's nonsense!
Here, 'Quatsch' refers to unintelligent or irrelevant speech; it's used in a descriptive way about someone's behavior.
Er redet immer nur Quatsch.
He always talks nonsense.
In this example, 'Quatsch' is used to refer to foolish or playful actions, advising against them in an imperative form.