
der Unsinn
nonsense
Something that is stupid, illogical, or meaningless; a statement or action without sense or reason.
Es ist doch Unsinn zu glauben, dass schwarze Katzen Unglück bringen.
It's nonsense to believe that black cats bring bad luck.
nonsense
Loading your saved state.

nonsense
Something that is stupid, illogical, or meaningless; a statement or action without sense or reason.
Es ist doch Unsinn zu glauben, dass schwarze Katzen Unglück bringen.
It's nonsense to believe that black cats bring bad luck.

to fool around
To behave in a silly or overexcited way; to play pranks or get up to mischief.
Hört auf, Unsinn zu machen, und konzentriert euch auf eure Hausaufgaben!
Stop fooling around and concentrate on your homework!
'Unsinn' (nonsense) is made up of the prefix 'Un-' (which expresses negation) and the noun 'der Sinn' (sense/meaning). So it literally means 'non-sense' or 'without sense'.
Diese Regel ergibt für mich absolut keinen Sinn.
This rule makes absolutely no sense to me.
In the meaning 'Nonsens' (nonsense), 'Unsinn' (nonsense) is usually used without an article as an uncountable noun. You say 'Das ist Unsinn!' (That's nonsense!) or can intensify it with 'so ein' (such) or 'völliger' (complete/utter).
Glaub diesen Gerüchten nicht, das ist doch völliger Unsinn!
Don't believe these rumors; that's utter nonsense!
The fixed expression 'Unsinn machen' means to behave silly or play pranks. It is often used when dealing with children.
Die Kinder haben den ganzen Nachmittag im Garten Unsinn gemacht.
The children fooled around in the garden all afternoon.
When it comes to nonsensical statements, the noun is often combined with the verbs 'reden' (to talk), 'erzählen' (to tell), or 'verbreiten' (to spread).
Hör auf, solchen Unsinn zu erzählen, das glaubt dir niemand.
Stop saying such nonsense; no one will believe you.
trash / garbage
Müll and Unsinn can both be used to reject an absurd or poor statement. Müll is more colloquial and often dismisses the content more strongly as completely worthless, while Unsinn mainly refers to its lack of logic or meaning. Unsinn is more suitable for factual criticism, while Müll is used for a blunt, casual dismissal.

Was du über dieses Thema erzählst, ist doch völliger Unsinn.
What you’re saying about this topic is complete nonsense.
Was du über dieses Thema erzählst, ist doch völliger Müll.
What you’re saying about this topic is complete trash.