stagnation
US /stæɡˈneɪ.ʃən/
UK /stæɡˈneɪ.ʃən/

1.
the state of not flowing or moving, or of not changing or developing
:
•
The economy is suffering from stagnation.
•
There is a risk of intellectual stagnation if you don't keep learning.
the state of not flowing or moving, or of not changing or developing