An informal, derogatory term for something that is perceived as nonsensical, stupid, or completely illogical.
example
Es ist doch völliger Schwachsinn, bei diesem Sturm ohne Jacke rauszugehen!
It's complete nonsense to go outside without a jacket in this storm!
Usage tips
Word composition
The word is made up of 'schwach' (weak) and 'Sinn' (sense/mind). It literally means 'weak sense' or 'weak mind,' which explains the derogatory meaning 'Unsinn' (nonsense).
EXAMPLE
Seine Erklärung klang für mich nach reinem Schwachsinn.
His explanation sounded like pure nonsense to me.
Register and style
In the meaning 'Unsinn' (nonsense), 'Schwachsinn' is a very informal and strongly derogatory word. It is used in colloquial speech to describe something as extremely stupid or pointless.
EXAMPLE
Rede doch nicht so einen Schwachsinn!
Don't talk such nonsense!
Outdated meaning
The medical meaning for an intellectual disability is now completely outdated and considered discriminatory. Never use this word for people, as it is extremely offensive.
EXAMPLE
In alten Büchern findet man manchmal den Begriff „Schwachsinn“ in einem medizinischen Kontext.
In old books, you sometimes find the term 'Schwachsinn' in a medical context.
Compare with
antonym
Schwachsinn vs Sinn
meaning / sense
'der Sinn' and 'der Schwachsinn' often form a clear contrast in everyday language. 'Sinn' stands for meaning, purpose, or a logical explanation. 'Schwachsinn' is used colloquially and disparagingly when you find something completely nonsensical, stupid, or illogical. The word is much stronger and less polite than 'kein Sinn' (no sense). In neutral situations, it is better to say 'Das ergibt keinen Sinn' (That makes no sense). 'Schwachsinn' only fits when you clearly want to express rejection or annoyance.
Schwachsinn
Warum redest du von Schwachsinn, bevor du den Plan richtig geprüft hast?
Why are you talking about nonsense before you have properly reviewed the plan?
Sinn
Euer Vorschlag hat Sinn, weil er Zeit und Geld spart.
Your suggestion makes sense because it saves time and money.