| Trad. | Simp. | Pinyin | English |
| 開 | 开 | kāi | open; operate (vehicle); start |
| 開辦 | 开办 | kāi bàn | open; start (a business, etc.); set up |
| 開採 | 开采 | kāi cǎi | (v) extract ore or some other natural resource from a mine |
| 開車 | 开车 | kāi chē | to drive a car |
| 開車人 | 开车人 | kāi chē rén | driver; person driving a vehicle |
| 開城 | 开城 | kāi chéng | Kaesong |
| 開除 | 开除 | kāi chú | to expel |
| 開除學籍 | 开除学籍 | kāi chú xué jí | to expel from school |
| 開創 | 开创 | kāi chuàng | initiate; begin |
| 開刀 | 开刀 | kāi dāo | to perform or have an operation; to operate on or to be operated on |
| 開動 | 开动 | kāi dòng | start; set in motion; move; march |
| 開端 | 开端 | kāi duān | start; beginning |
| 開發 | 开发 | kāi fā | exploit (a resource); open up (for development); to develop |
| 開發過程 | 开发过程 | kāi fā guò chéng | development process |
| 開發環境 | 开发环境 | kāi fā huán jìng | development environment (computer) |
| 開發區 | 开发区 | kāi fā qū | development zone |
| 開發人員 | 开发人员 | kāi fā rén yuán | developer |
| 開發銀行 | 开发银行 | kāi fā yín háng | development bank |
| 開發週期 | 开发周期 | kāi fā zhōu qī | development cycle; development period |
| 開飯 | 开饭 | kāi fàn | serve a meal |
| 開放 | 开放 | kāi fàng | lift (restrictions); open; to lift a ban; to make open to the public |
| 開放式網絡 | 开放式网络 | kāi fàng shì wǎng luò | open network |
| 開放式系統 | 开放式系统 | kāi fàng shì xì tǒng | open system(s) |
| 開放系統 | 开放系统 | kāi fàng xì tǒng | open system |
| 開放系統互連 | 开放系统互连 | kāi fàng xì tǒng hù lián | open systems interconnection; OSI |
| 開放源碼軟件 | 开放源码软件 | kāi fàng yuán mǎ ruǎn jiàn | open source software (OSS) |
| 開封 | 开封 | Kāi fēng | (N) Kaifeng (city in Henan) |
| 開封地區 | 开封地区 | Kāi fēng dì qū | (N) Kaifeng district (district in Henan) |
| 開封市 | 开封市 | Kāi fēng shì | Kaifeng |
| 開工 | 开工 | kāi gōng | (v) begin factory operations; start a construction job |
| 開關 | 开关 | kāi guān | power switch |
| 開國元勛 | 开国元勋 | kāi guó yuán xūn | founding fathers (of a country) |
| 開化 | 开化 | kāi huà | (v) have laws and culture; be civilized |
| 開花兒 | 开花儿 | kāi huār | (of flowers) to open out; blossom |
| 開會 | 开会 | kāi huì | have a meeting; be at a meeting; to hold or attend a meeting |
| 開會祈禱 | 开会祈祷 | kāi huì qí dǎo | invocation |
| 開火 | 开火 | kāi huǒ | to open fire |
| 開江 | 开江 | Kāi jiāng | (N) Kaijiang (place in Sichuan) |
| 開課 | 开课 | kāi kè | school begins; give a course; teach a subject |
| 開墾 | 开垦 | kāi kěn | (v) put under the plough; clear a wild area for cultivation |
| 開口 | 开口 | kāi kǒu | open one's mouth; start to talk |
| 開闊 | 开阔 | kāi kuò | wide; open (of spaces) |
| 開朗 | 开朗 | kāi lǎng | (adj) well lit; suddenly become bright and clear; (adj) carefree; without worry |
| 開列 | 开列 | kāi liè | (make a) list |
| 開魯 | 开鲁 | Kāi lǔ | (N) Kailu (place in Inner Mongolia) |
| 開羅 | 开罗 | Kāi luó | Cairo (capital of Egypt) |
| 開羅大學 | 开罗大学 | Kāi luó Dà xué | Cairo University |
| 開曼群島 | 开曼群岛 | Kāi màn Qún dǎo | Cayman Islands |
| 開門 | 开门 | kāi mén | open (the) door |
| 開門見山 | 开门见山 | kāi mén jiàn shān | to get right to the point; to open the door and see the mountain |
| 開明 | 开明 | kāi míng | enlightened; open-minded; enlightenment |
| 開幕 | 开幕 | kāi mù | to open (a conference, e.g.); to inaugurate |
| 開幕式 | 开幕式 | kāi mù shì | opening ceremony |
| 開拍 | 开拍 | kāi pāi | begin shooting (a film) |
| 開闢 | 开辟 | kāi pì | (v) open the flow of some stream; start; (v) build a road |
| 開平 | 开平 | Kāi píng | (N) Kaiping (city in Guangdong) |
| 開普敦 | 开普敦 | Kāi pǔ dūn | Cape Town (city in South Africa) |
| 開普勒 | 开普勒 | Kāi pǔ lè | (Johannes) Kepler |
| 開啟 | 开启 | kāi qǐ | (v) open |
| 開槍 | 开枪 | kāi qiāng | fire a gun |
| 開設 | 开设 | kāi shè | offer (goods or services); open (for business, etc.) |
| 開始 | 开始 | kāi shǐ | begin; beginning; start; initial |
| 開始以前 | 开始以前 | kāi shǐ yǐ qián | before the beginning (of sth) |
| 開水 | 开水 | kāi shuǐ | boiled water; boiling water |
| 開鎖 | 开锁 | kāi suǒ | unlock |
| 開天闢地 | 开天辟地 | kāi tiān pì dì | (saying) when heaven and earth were split apart in the creation; the beginning of the world |
| 開庭 | 开庭 | kāi tíng | begin a (judicial) court session |
| 開通 | 开通 | kāi tong | open-minded |
| 開頭 | 开头 | kāi tóu | beginning |
| 開拓 | 开拓 | kāi tuò | (v) bring forth or open up |
| 開拓者 | 开拓者 | kāi tuò zhě | pioneer |
| 開玩笑 | 开玩笑 | kāi wán xiào | to play a joke; to make fun of; to joke |
| 開縣 | 开县 | Kāi xiàn | (N) Kai county (county in Sichuan) |
| 開銷 | 开销 | kāi xiāo | expenses |
| 開小差 | 开小差 | kāi xiǎo chāi | AWOL, Absent With Out Leave; desert the military |
| 開心 | 开心 | kāi xīn | to feel happy; to have a great time; to make fun of somebody |
| 開心果 | 开心果 | kāi xīn guǒ | pistachio nuts |
| 開心樂園餐 | 开心乐园餐 | Kāi xīn lè yuán cān | Happy Meal |
| 開學 | 开学 | kāi xué | school opens; new term begins |
| 開演 | 开演 | kāi yǎn | (of a play, movie, etc.) to begin |
| 開眼 | 开眼 | kāi yǎn | (v) begin a performance or movie |
| 開眼界 | 开眼界 | kāi yǎn jiè | broaden, expand one's horizons |
| 開陽 | 开阳 | Kāi yáng | (N) Kaiyang (place in Guizhou) |
| 開業 | 开业 | kāi yè | open (for business) |
| 開夜車 | 开夜车 | kāi yè chē | burn the midnight oil; work late into the night |
| 開原 | 开原 | Kāi yuán | (N) Kaiyuan (city in Liaoning) |
| 開源宗教 | 开源宗教 | kāi yuán zōng jiào | open source religion |
| 開遠 | 开远 | Kāi yuǎn | (N) Kaiyuan (city in Yunnan) |
| 開齋節 | 开斋节 | Kāi zhāi jié | Eid ul-Fitr or Hari Raya (Muslim Day of Celebration - the latter name is commonly used in Malaysia and Indonesia) |
| 開展 | 开展 | kāi zhǎn | (begin to) develop; unfold ; to start; to launch; to open |
| 開戰 | 开战 | kāi zhàn | start a war |
| 開張 | 开张 | kāi zhāng | open a business; first transaction of a business day |
| 開支 | 开支 | kāi zhī | expenditures; pay; expenses |
Click on the pinyin to hear it pronounced. The simplified version is shown only if different from the traditional.
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