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

1.
merosot, turun drastis
to continuously get worse or decline, often at an accelerating rate
:
•
After losing his job, his life began to spiral down.
Setelah kehilangan pekerjaannya, hidupnya mulai merosot.
•
The company's profits continued to spiral down due to poor management.
Keuntungan perusahaan terus merosot karena manajemen yang buruk.