# How to say “you're crazy” in Chinese

> The mildest way to say “you're crazy” in Chinese is 你疯了 (nǐ fēng le), “you're crazy”. The strongest is 脑子进水了 (nǎo zi jìn shuǐ le), “lost your mind (lit. water got in your brain)”. Here are all 10, ranked mild to strong, with pinyin and when to use each one.

Source: https://lanlanchinese.com/how-to-say/crazy-in-chinese (updated 2026-10-18)

1. **你疯了** (nǐ fēng le) (strength 1/5): you're crazy. Laughing at a wild plan.
2. **疯子** (fēng zi) (strength 2/5): madman. For the friend who books flights at 3am.
   Heard in a real video: 张差说这个，我是疯子。 "Zhang Chai said, I'm a madman." (https://www.youtube.com/watch?v=rmDw8Gent5Y&t=30s)
3. **有病** (yǒu bìng) (strength 3/5): you're sick in the head (lit. have illness). Now you're annoyed.
   Heard in a real video: 他有病吗，自己吓自己。 "Is he sick, scaring himself like that?" (https://www.youtube.com/watch?v=H9H6PLuJZhg&t=150s)
   Heard in a real video: 觉得我脑子有病？ "Why does everyone in the comments think I'm crazy?" (https://www.youtube.com/watch?v=IMxDIYrqxz8&t=1s)
4. **神经病** (shén jīng bìng) (strength 4/5): psycho (lit. nerve disease). Shouted at bad drivers everywhere.
   Heard in a real video: 神经病。 "You're insane." (https://www.youtube.com/watch?v=LT5NUy8wCbM&t=34s)
5. **脑子进水了** (nǎo zi jìn shuǐ le) (strength 5/5): lost your mind (lit. water got in your brain). The final verdict.
   Heard in a real video: 脑子进水了呗。 "Because water got in your brain, duh." (https://www.youtube.com/watch?v=RfOu27xj4tk&t=346s)

## More ways, mild to strong again

6. **太离谱了** (tài lí pǔ le) (strength 1/5): that's wild. The plan sounds made up.
   Heard in a real video: 简直太离谱了， "This is just absurd—a Genshin voice actor dubbing at home." (https://www.youtube.com/watch?v=9F6TEnaNu7E&t=0s)
7. **发神经** (fā shén jīng) (strength 2/5): losing it. Texting your ex at 3am.
8. **疯疯癫癫** (fēng feng diān diān) (strength 3/5): unhinged. A whole personality now.
   Heard in a real video: 那你现在看你疯疯癫癫的。 "But look at you now, all over the place." (https://www.youtube.com/watch?v=cekQHVS8mO0&t=200s)
9. **脑子有坑** (nǎo zi yǒu kēng) (strength 4/5): a hole in your brain. Not a compliment.
10. **疯得不轻** (fēng de bù qīng) (strength 5/5): seriously, seriously crazy. Say it, then leave the room.

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