| 不 | bù | (negative prefix); not; no |
| 不能 | bù néng | cannot; must not; should not |
| 不是 | bù shi | fault; blame |
| 不是 | bù shì | no; is not; not |
| 不同 | bù tóng | different; distinct; not the same; not alike |
| 不可 | bù kě | cannot; should not; must not |
| 不断 | bù duàn | unceasing; uninterrupted; continuous; constant |
| 不仅 | bù jǐn | not only (this one); not just (...) but also |
| 不过 | bù guò | only; merely; no more than; but; however; anyway (to get back to a previous topic) |
| 不会 | bù huì | improbable; unlikely; will not (act, happen etc); not able; not having learned to do sth |
| 不要 | bù yào | don't!; must not |
| 并不 | bìng bù | not at all; emphatically not |
| 不得 | bù dé | must not; may not; not be allowed; cannot |
| 不但 | bù dàn | not only (... but also...) |
| 不足 | bù zú | insufficient; lacking; deficiency; not enough; inadequate; not worth; cannot; should not |
| 不一 | bù yī | to vary; to differ |
| 不够 | bù gòu | not enough; insufficient; inadequate |
| 不变 | bù biàn | constant; unvarying; (math.) invariant |
| 不久 | bù jiǔ | not long (after); before too long; soon; soon after |
| 不敢 | bù gǎn | not dare to |
| 不论 | bù lùn | whatever; no matter what (who, how etc); regardless of; not to discuss |
| 不管 | bù guǎn | no matter (what, how); regardless of; no matter |
| 毫不 | háo bù | hardly; not in the least; not at all |
| 不了 | bù liǎo | unable to; without end |
| 不用 | bù yòng | need not |
| 不必 | bù bì | need not; does not have to |
| 不在 | bù zài | not be in; be out |
| 不得不 | bù dé bù | have no choice or option but to; cannot but; have to; can't help it; can't avoid |
| 不如 | bù rú | not equal to; not as good as; inferior to; it would be better to |
| 不宜 | bù yí | not suitable; inadvisable; inappropriate |
| 不行 | bù xíng | won't do; be out of the question; be no good; not work; not be capable |
| 不合 | bù hé | to not conform to; to be unsuited to; to be out of keeping with; should not; ought out |
| 不怕 | bù pà | fearless; not worried (by setbacks or difficulties) |
| 不容 | bù róng | not tolerate; not allow; not brook; to not welcome |
| 不满 | bù mǎn | resentful; discontented; dissatisfied |
| 不见 | bù jiàn | not to see; not to meet; to have disappeared; to be missing |
| 不平 | bù píng | uneven; injustice; unfairness; wrong; grievance; indignant; dissatisfied |
| 不能不 | bù néng bù | have to; cannot but |
| 不成 | bù chéng | won't do; unable to; (at the end of a rhetorical question) can that be? |
| 不对 | bù duì | incorrect; wrong; amiss; abnormal; queer |
| 不良 | bù liáng | bad; harmful; unhealthy |
| 不准 | bù zhǔn | not allow; forbid; prohibit |
| 不等 | bù děng | to vary; to differ; inequality |
| 差不多 | chà bu duō | almost; nearly; more or less; about the same; good enough; not bad |
| 不适 | bù shì | unwell; indisposed; out of sorts |
| 不致 | bù zhì | not in such a way as to; not likely to |
| 不许 | bù xǔ | not allow; must not; can't |
| 要不 | yào bù | otherwise; or; or else; how about...? (one choice or the other); either this, or else... |
| 不安 | bù ān | unpeaceful; unstable; uneasy; disturbed; restless; worried |
| 不及 | bù jí | to fall short of; not as good as; too late |
