| 迅速HSK 5 | xùn sù | rapid; speedy; fast | |
| 迅猛 | xùn měng | quick and violent | |
| 迅即 | xùn jí | immediately; promptly; quickly | |
| 迅捷 | xùn jié | fast and nimble | |
| 迅疾 | xùn jí | rapid; swift |
| 1 | Economic development in border areas is rapid. | |
| 2 | The keystrokes of this keyboard are very responsive. | |
| 3 | The city's population has grown rapidly in recent years. | |
| 4 | The development of western economy is very rapid. | |
| 5 | Coastal cities are developing their economies at a fast pace. |