| 不 |
bù kuài | unhappy / in low spirits / (of a knife) not sharp |
| 不 |
bù | no; not so / (bound form) not; un- |
| 快 |
kuài | rapid / quick / speed / rate / soon / almost / to make haste / clever / sharp (of knives or wits) / forthright / plainspoken / gratified / pleased / pleasant |