spiral down
US /ˈspaɪ.rəl daʊn/
UK /ˈspaɪ.rəl daʊn/

1.
abwärts gehen, sich verschlechtern
to continuously get worse or decline, often at an accelerating rate
:
•
After losing his job, his life began to spiral down.
Nachdem er seinen Job verloren hatte, begann sein Leben abwärts zu gehen.
•
The company's profits continued to spiral down due to poor management.
Die Gewinne des Unternehmens sanken aufgrund schlechten Managements weiter.