quit (something) cold turkey

To stop doing something abruptly. The phrase is most often used to describe the sudden cessation of a drug. After smoking for so long, I should have never tried to quit cold turkey—the withdrawal symptoms are unbearable. I'm so impressed that you quit gambling cold turkey!

Common Names:

Name	Pronounced	Usage
Matilda	mə-TIL-də (English), MAH-teel-dah (Finnish)	English, Swedish, Finnish
Lorna	LAWR-nə	English
Herberto	er-BER-to (Spanish)	Spanish, Portuguese
Margalit	-	Hebrew
Urien	-	Welsh, Welsh Mythology, Arthurian Romance
Miyako	mee-yah-ko	Japanese