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

1.
secara tiba-tiba, mendadak, seketika
the sudden and complete cessation of an addictive habit or substance rather than a gradual reduction
:
•
He quit smoking cold turkey after 20 years.
Dia berhenti merokok secara tiba-tiba setelah 20 tahun.
•
Going cold turkey on sugar can be tough.
Berhenti gula secara tiba-tiba bisa sulit.