Meaning of the word "cold turkey" in English

What does "cold turkey" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

cold turkey

US /ˌkoʊld ˈtɜːr.ki/
UK /ˌkəʊld ˈtɜː.ki/
"cold turkey" picture

Idiom

the sudden and complete cessation of an addictive habit or substance rather than a gradual reduction

Example:
He quit smoking cold turkey after 20 years.
Going cold turkey on sugar can be tough.