| 必 | [ bì ] certainly, must, will, necessarily |
| 必不可少 | [ bì bù kě shǎo ] absolutely necessary, indispensable, essential |
| 必不可少組成 | [ bì bù kě shǎo zǔ chéng ] absolute necessity, sine qua non |
| 必不可少组成 | [ bì bù kě shǎo zǔ chéng ] absolute necessity, sine qua non |
| 必得 | [ bì děi ] must, have to |
| 必定 | [ bì dìng ] be bound to, be sure to |
| 必將 | [ bì jīang ] inevitably |
| 必将 | [ bì jīang ] inevitably |
| 必然 | [ bì rán ] inevitable, certain, necessity |
| 必修 | [ bì xīu ] a required course |
| 必修課 | [ bì xīu kè ] a required course |
| 必修课 | [ bì xīu kè ] a required course |
| 必需 | [ bì xū ] essential, indispensable |
| 必須 | [ bì xū ] to have to, must |
| 必须 | [ bì xū ] to have to, must |
| 必需品 | [ bì xū pǐn ] necessity, essential (thing) |
| 必要 | [ bì yào ] necessary, essential, indispensable, required |
| 必要條件 | [ bì yào tiáo jìan ] requirement, necessary condition (math) |
| 必要条件 | [ bì yào tiáo jìan ] requirement, necessary condition (math) |
| 必要性 | [ bì yào xìng ] necessity |
| 必由之路 | [ bì yóu zhī lù ] the road one must follow or take, the only way |
| ⇒ 哀兵必勝 | [ āi bīng bì shèng ] an army burning with righteous indignation is bound to win |
| ⇒ 哀兵必胜 | [ āi bīng bì shèng ] an army burning with righteous indignation is bound to win |
| ⇒ 不必要 | [ bú bì yào ] needless, unnecessary |
| ⇒ 不必 | [ bù bì ] need not, does not have to |
| ⇒ 何必 | [ hé bì ] there is no need, why should |
| ⇒ 沒有必要 | [ méi yǒu bì yào ] there is no need to (do sth) |
| ⇒ 没有必要 | [ méi yǒu bì yào ] there is no need to (do sth) |
| ⇒ 生活必需品 | [ shēng húo bì xū pǐn ] life's necessities |
| ⇒ 勢必 | [ shì bì ] is bound to (happen) |
| ⇒ 势必 | [ shì bì ] is bound to (happen) |
| ⇒ 勢在必行 | [ shì zài bì xíng ] be imperative, be required by circumstances |
| ⇒ 势在必行 | [ shì zài bì xíng ] be imperative, be required by circumstances |
| ⇒ 未必 | [ wèi bì ] may not, not necessarily |
| ⇒ 務必 | [ wù bì ] (adv) must; need to, be sure to |
| ⇒ 务必 | [ wù bì ] (adv) must; need to, be sure to |
