| 不得不 | bù dé bù | have no choice or option but to / cannot but / have to / can't help it / can't avoid | ![]() |
| 不由得 | bù yóu de | can't help / cannot but | ![]() |
| 不能不 | bù néng bù | have to / cannot but | ![]() |
| 情不自禁 | qíng bù zì jīn | (idiom) cannot refrain from / cannot help / cannot but | ![]() |
| 说不得 | shuō bu de | to be unmentionable / be unspeakable / must / cannot but | ![]() |
