So closely connected that separation is not possible. Often used for abstract concepts, but also for physical connections.
example
In dieser Diskussion sind Politik und Wirtschaft untrennbar miteinander verknüpft.
In this discussion, politics and economics are inseparably linked.
Usage tips
Word structure
The word consists of the prefix 'un-' (not) and the adjective 'trennbar' (separable). 'Trennbar' comes from the verb 'trennen' (to separate). So something that is 'untrennbar' (inseparable) cannot be separated from something else.
EXAMPLE
Die beiden Teile des Geräts sind untrennbar miteinander verschweißt.
The two parts of the device are inseparably welded together.
Fixed expression
'Untrennbar' (inseparable) is very commonly used in the fixed expressions 'untrennbar miteinander verbunden sein' (to be inseparably connected with each other) or 'untrennbar miteinander verknüpft sein' (to be inseparably linked with each other). This structure emphasizes the close relationship between two or more things.
EXAMPLE
Für ihn sind Beruf und Privatleben untrennbar miteinander verbunden.
For him, work and private life are inseparably connected.
Typical collocations
The word is often used for abstract concepts that are closely related to each other. Typical pairs are: theory and practice, rights and duties, body and mind.
EXAMPLE
In seiner Philosophie sind Körper und Geist untrennbar.
In his philosophy, body and mind are inseparable.
Compare with
antonym · confusable
untrennbar vs lösbar
solvable / soluble
'untrennbar' and 'lösbar' can be opposites when talking about a connection. 'untrennbar' means that two things are so firmly connected that they cannot be separated. In this context, 'lösbar' means that a connection can be separated or loosened. There is a risk of confusion because 'lösbar' also often means that a solution can be found for a problem. That is a different use. When you are talking about a fixed connection, the contrast is clear: 'untrennbar' means not separable, while 'lösbar' means separable or detachable.
untrennbar
Bei diesem alten Buch sind einige Seiten untrennbar miteinander verklebt.
In this old book, some pages are inseparably stuck together.
lösbar
Die Schraube ist lösbar, aber man braucht dafür das richtige Werkzeug.
The screw can be loosened, but you need the right tool for it.