| 必 | [ bì ] certainly, must, will, necessarily |
| 必不可少 | [ bì bù kě shaǒ ] absolutely necessary, indispensable, essential |
| 必不可少組成 | [ bì bù kě shaǒ zǔ chéng ] absolute necessity, sine qua non |
| 必不可缺 | [ bì bù kě quē ] see 必不可少[bi4 bu4 ke3 shao3] |
| 必修 | [ bì xiū ] (of an academic course) required, compulsory |
| 必修課 | [ bì xiū kè ] required course, compulsory course |
| 必備 | [ bì beì ] essential |
| 必勝 | [ bì shèng ] to be certain of victory, to be bound to prevail |
| 必勝客 | [ bì shèng kè ] Pizza Hut |
| 必和必拓 | [ bì huó bì tuò ] BHP Billiton (Anglo-Australian mining corporation) |
| 必定 | [ bì dìng ] to be bound to, to be sure to |
| 必將 | [ bì jiāng ] inevitably |
| 必得 | [ bì deǐ ] must, have to |
| 必恭必敬 | [ bì gōng bì jìng ] variant of 畢恭畢敬|毕恭毕敬[bi4 gong1 bi4 jing4] |
| 必應 | [ bì yìng ] Bing (search engine) |
| 必有重謝 | [ bì yoǔ zhòng xiè ] (we) will be very grateful (if ...) |
| 必死之症 | [ bì sǐ zhī zhèng ] terminal illness, incurable condition (also fig.) |
| 必然 | [ bì rán ] inevitable, certain, necessity |
| 必然王國 | [ bì rán wáng guó ] realm of necessity (philosophy) |
| 必然結果 | [ bì rán jié guǒ ] inevitable outcome, inescapable consequence |
| 必由之路 | [ bì yoú zhī lù ] the road one must follow or take, the only way |
| 必經 | [ bì jīng ] unavoidable, the only (road, entrance etc) |
| 必經之路 | [ bì jīng zhī lù ] the road one must follow or take, the only way, same as 必由之路[bi4 you2 zhi1 lu4] |
| 必要 | [ bì yaò ] necessary, essential, indispensable, required |
| 必要性 | [ bì yaò xìng ] necessity |
| 必要條件 | [ bì yaò jiàn ] requirement, necessary condition (math) |
| 必需 | [ bì xū ] to need, to require, essential, indispensable |
| 必需品 | [ bì xū pǐn ] necessity, essential (thing) |
| 必須 | [ bì xū ] to have to, must, compulsory, necessarily |
| ⇒ 三人行，則必有我師 | [ sān rén xíng zé bì yoǔ wǒ shī ] If three walk together, one of them can teach me sth (Confucius) |
| ⇒ 三人行，必有我師 | [ sān rén xíng bì yoǔ wǒ shī ] lit. if three walk together, one can be my teacher (idiom, from the Analects of Confucius), you have sth to learn from everyone |
| ⇒ 不必 | [ bù bì ] need not, does not have to, not necessarily |
| ⇒ 不必要 | [ bù bì yaò ] needless, unnecessary |
| ⇒ 事必躬親 | [ shì bì gōng qīn ] to attend to everything personally |
| ⇒ 二虎相鬥，必有一傷 | [ èr hǔ xiāng doù bì yoǔ yī shāng ] lit. when two tigers fight, one is sure to be wounded (idiom), fig. if it comes to a fight, someone will get hurt |
| ⇒ 人無遠慮，必有近憂 | [ rén wú yuǎn lǜ bì yoǔ jìn yoū ] He who gives no thought to far-flung problems soon finds suffering nearby (idiom, from Analects)., Smug concentration on the here and now will lead to future sorrow. |
| ⇒ 何必 | [ hé bì ] there is no need, why should |
| ⇒ 兩虎相爭，必有一傷 | [ liǎng hǔ xiāng zhēng bì yoǔ yī shāng ] if two tigers fight, one will get injured (idiom), if you start a war, someone is bound to get hurt |
| ⇒ 兩虎相鬥，必有一傷 | [ liǎng hǔ xiāng doù bì yoǔ yī shāng ] when two tigers fight, one will get injured (idiom), if it comes to a fight, someone will get hurt. |
| ⇒ 分久必合，合久必分 | [ fēn jiǔ bì hé hé jiǔ bì fēn ] lit. that which is long divided must unify, and that which is long unified must divide (idiom, from 三國演義|三国演义[San1 guo2 Yan3 yi4]), fig. things are constantly changing |
| ⇒ 分久必合，合久必分 | [ fēn jiǔ bì hé hé jiǔ bì fēn ] lit. that which is long divided must unify, and that which is long unified must divide (idiom, from 三國演義|三国演义[San1 guo2 Yan3 yi4]), fig. things are constantly changing |
| ⇒ 分秒必爭 | [ fēn bì zhēng ] seize every minute and second (idiom); not a minute to lose, every moment counts |
| ⇒ 務必 | [ wù bì ] must, to need to, to be sure to |
| ⇒ 勢在必得 | [ shì zaì bì dé ] to be determined to win (idiom) |
| ⇒ 勢在必行 | [ shì zaì bì xíng ] circumstances require action (idiom); absolutely necessary, imperative |
| ⇒ 勢必 | [ shì bì ] to be bound to, undoubtedly will |
| ⇒ 哀兵必勝 | [ aī bīng bì shèng ] an army burning with righteous indignation is bound to win (idiom) |
| ⇒ 多行不義必自斃 | [ duō xíng bù yì bì zì bì ] persisting in evil brings about self-destruction (idiom) |
| ⇒ 大可不必 | [ dà kě bù bì ] need not, unnecessary |
| ⇒ 大難不死，必有後福 | [ dà nàn bù sǐ bì yoǔ hoù fú ] one is bound for good fortune after surviving a great disaster (proverb) |
| ⇒ 小時了了，大未必佳 | [ shí dà weì bì jiā ] being bright at an early age does not necessarily bring success upon growing up (proverb) |
| ⇒ 工欲善其事，必先利其器 | [ gōng yù shàn qí shì bì xiān lì qí qì ] To do a good job, an artisan needs the best tools (idiom). Good tools are prerequisite to the successful execution of a job |
| ⇒ 德不配位，必有災殃 | [ dé bù peì weì bì yoǔ zaī yāng ] calamity will befall those whose moral standards are not in keeping with their social status |
| ⇒ 必和必拓 | [ bì huó bì tuò ] BHP Billiton (Anglo-Australian mining corporation) |
| ⇒ 必恭必敬 | [ bì gōng bì jìng ] variant of 畢恭畢敬|毕恭毕敬[bi4 gong1 bi4 jing4] |
| ⇒ 忽必烈 | [ hū bì liè ] Khubilai Khan (1215-1294), grandson of Genghis Khan 成吉思汗, first Yuan dynasty emperor, reigned 1260-1294 |
| ⇒ 想必 | [ xiǎng bì ] presumably, probably, in all likelihood, surely |
| ⇒ 既有今日何必當初 | [ jì yoǔ jīn rì hé bì dāng chū ] see 早知今日何必當初|早知今日何必当初[zao3 zhi1 jin1 ri4 he2 bi4 dang1 chu1] |
| ⇒ 早知今日何必當初 | [ zaǒ zhī jīn rì hé bì dāng chū ] if I (you, she, he...) had known it would come to this, I (you, she, he...) would not have acted thus (idiom), to regret vainly one's past behavior |
| ⇒ 智者千慮，必有一失 | [ zhì zhě qiān lǜ bì yoǔ yī shī ] lit. a wise person reflecting a thousand times can still make a mistake (idiom); fig. nobody is infallible |
| ⇒ 有其師，必有其徒 | [ yoǔ qí shī bì yoǔ qí tú ] As the teacher, so the pupil. (idiom) |
| ⇒ 有其父必有其子 | [ yoǔ qí fù bì yoǔ qí zǐ ] like father, like son (idiom) |
| ⇒ 有寶何必人前誇 | [ yoǔ baǒ hé bì rén qián kuā ] There is no need to boast about one's treasures. (idiom) |
| ⇒ 有所得必有所失 | [ yoǔ suǒ dé bì yoǔ suǒ shī ] there is no gain without a loss (idiom), there is no such thing as a free meal |
| ⇒ 有求必應 | [ yoǔ qiú bì yìng ] to grant whatever is asked for, to accede to every plea |
| ⇒ 未必 | [ weì bì ] not necessarily, maybe not |
| ⇒ 未必見得 | [ weì bì jiàn dé ] not necessarily, that's not sure |
| ⇒ 欲善其事，必先利其器 | [ yù shàn qí shì bì xiān lì qí qì ] To do a good job, an artisan needs the best tools (idiom). Good tools are prerequisite to the successful execution of a job |
| ⇒ 洛必達法則 | [ luò bì dá fǎ zé ] L'Hôpital's rule (math.) |
| ⇒ 物極必反 | [ wù jí bì fǎn ] when things reach an extreme, they can only move in the opposite direction (idiom) |
| ⇒ 生活必需品 | [ shēng huó bì xū pǐn ] life's necessities |
| ⇒ 睚眥必報 | [ yá zì bì baò ] lit. to seek revenge over a dirty look (idiom), fig. small-minded, vindictive |
| ⇒ 空穴來風未必無因 | [ kòng xué laí fēng weì bì wú yīn ] wind does not come from an empty cave without reason, there's no smoke without fire (idiom) |
| ⇒ 羅必達法則 | [ luó bì dá fǎ zé ] L'Hôpital's rule (math.) (Tw) |
| ⇒ 自不必說 | [ zì bù bì shuō ] (idiom) needless to say, it goes without saying |
| ⇒ 董必武 | [ dǒng bì wǔ ] Dong Biwu (1886-1975), one of the founders of the Chinese communist party |
| ⇒ 蘇必利爾湖 | [ sū bì lì ěr hú ] Lake Superior, one of the Great Lakes 五大湖[Wu3 da4 hu2] |
| ⇒ 言多必失 | [ yán duō bì shī ] if you say too much, you're bound to slip up at some point (idiom) |
| ⇒ 言必信，行必果 | [ yán bì xìn xíng bì guǒ ] one must be a man of his word and resolute in his work (proverb) |
| ⇒ 言必信，行必果 | [ yán bì xìn xíng bì guǒ ] one must be a man of his word and resolute in his work (proverb) |
| ⇒ 車到山前必有路 | [ chē daò shān qián bì yoǔ lù ] lit. when we get to the mountain, there'll be a way through (idiom), fig. everything will turn out for the best, let's worry about it when it happens, it will be all right on the night |
| ⇒ 車到山前必有路，船到橋頭自然直 | [ chē daò shān qián bì yoǔ lù chuán daò toú zì rán zhí ] everything will turn out all right (idiom), let's worry about it when it happens, it will be all right on the night |
| ⇒ 錙銖必較 | [ zī zhū bì ] to haggle over every cent (idiom) |
| ⇒ 陰德必有陽報 | [ yīn dé bì yoǔ yáng baò ] hidden merits will have visible rewards (idiom) |
| ⇒ 非必要 | [ feī bì yaò ] inessential, unnecessary |
| ⇒ 非必需 | [ feī bì xū ] inessential |
| ⇒ 驕兵必敗 | [ bīng bì baì ] lit. an arrogant army is bound to lose (idiom), fig. pride goes before a fall |
| ⇒ 驕者必敗 | [ zhě bì baì ] pride goes before a fall (idiom) |
