Here’s one most people don’t know: “brainwash” is a direct translation of 洗脑 (xǐnǎo).
It entered English during the Korean War, coined to describe the Chinese “re-education” techniques used on prisoners of war. Journalist Edward Hunter popularized the term in 1950, and it exploded.
What makes this case remarkable: “brainwash” is now so thoroughly English that its Chinese origin is invisible. It’s used for advertising, cults, corporate culture, education — anything where ideas are forcibly installed. Nobody thinks “Chinese word” when they say it.
This is the most aggressive route to adoption: weaponized language. The word entered English because of war, not trade. It spread because it named a terrifying new concept, not because it was charming or useful.
In the Zhonglish framework: this is the dark side of the story. Chinese vocabulary doesn’t just enter English through tea and silk. Sometimes it enters through conflict.
**Verdict: Fully naturalized. Origin forgotten. A cautionary case.**