| 疯狂HSK 5 | fēng kuáng | crazy; frantic; extreme popularity | |
| 疯牛病 | fēng niú bìng | mad cow disease (bovine spongiform encephalopathy) | |
| 发疯 | fā fēng | to go mad; to go crazy; to lose one's mind | |
| 疯癫 | fēng diān | insane; crazy | |
| 发酒疯 | fā jiǔ fēng | to get wildly drunk |
| 1 | We danced crazily with joy until late at night. | |
| 2 | He ran frantically as if he was chasing something. | |
| 3 | He was driven by crazy thoughts and didn't sleep all night. | |
| 4 | The idea is a bit crazy, but I think it will succeed. | |
| 5 | The puppy bit its toy like crazy, frightening its owner. |