| 不断HSK 5 | bù duàn | unceasing; uninterrupted; continuous; constant | |
| 不仅HSK 4 | bù jǐn | not only (this one); not just (...) but also | |
| 不过HSK 4 | bù guò | only; merely; no more than; but; however; anyway (to get back to a previous topic); cannot be more (after adjectival) | |
| 不可 | bù kě | cannot; should not; must not | |
| 不是HSK 1 | bù shì | no; is not; not |