cold turkey
US /ˌkoʊld ˈtɜːr.ki/
UK /ˌkoʊld ˈtɜːr.ki/

1.
birdenbire, aniden, kesin olarak
the sudden and complete cessation of an addictive habit or substance rather than a gradual reduction
:
•
He quit smoking cold turkey after 20 years.
20 yıl sonra birdenbire sigarayı bıraktı.
•
Going cold turkey on sugar can be tough.
Şekeri birdenbire bırakmak zor olabilir.