| 开打 | kāi dǎ | to perform acrobatic or choreographed fight |
| 开拍 | kāi pāi | begin shooting (a film) |
| 开拓性 | kāi tuò xìng | pioneering; groundbreaking |
| 开拓者 | kāi tuò zhě | pioneer |
| 开拔 | kāi bá | to set out (of troops); departure; start date (of military expedition) |
| 开挖 | kāi wā | to dig out; to excavate; to scoop out |
| 开放式系统 | kāi fàng shì xì tǒng | open system(s) |
| 开放式网络 | kāi fàng shì wǎng luò | open network |
| 开放性 | kāi fàng xìng | openness |
| 开放源代码 | kāi fàng yuán dài mǎ | see 开放源码 |
| 开放源码 | kāi fàng yuán mǎ | open source (computing) |
| 开放源码软件 | kāi fàng yuán mǎ ruǎn jiàn | open source software (OSS) |
| 开放系统 | kāi fàng xì tǒng | open system |
| 开放系统互连 | kāi fàng xì tǒng hù lián | open systems interconnection; OSI |
| 开败 | kāi bài | to wither and fall |
| 开敞 | kāi chǎng | wide open |
| 开明君主 | kāi míng jūn zhǔ | enlightened sovereign |
| 开映 | kāi yìng | to start showing a movie |
| 开普勒 | Kāi pǔ lè | Johannes Kepler (1571-1630), German astronomer and formulator of Kepler's laws of planetary motion |
| 开普勒定律 | Kāi pǔ lè dìng lǜ | Kepler's laws of planetary motion (1609, 1618) |
| 开普敦 | Kāi pǔ dūn | Cape Town (city in South Africa) |
| 开晴 | kāi qíng | to brighten up |
| 开畅 | kāi chàng | happy and carefree |
| 开旷 | kāi kuàng | open and vast |
| 开曼群岛 | Kāi màn Qún dǎo | Cayman Islands |
| 开会祈祷 | kāi huì qí dǎo | invocation |
| 开本 | kāi běn | format (page layout for printing) |
| 开架 | kāi jià | open shelves (in self-service store or user access library) |
| 开业大吉 | kāi yè dà jí | celebration on opening a business |
| 开机 | kāi jī | to start an engine; to boot up (a computer); to press Ctrl-Alt-Delete; to begin shooting a film or TV show |
| 开步 | kāi bù | to step forward; to walk |
| 开江 | Kāi jiāng | Kaijiang county in Dazhou 达州, Sichuan |
| 开江县 | Kāi jiāng xiàn | Kaijiang county in Dazhou 达州, Sichuan |
| 开河 | kāi hé | to open a river; to dig a canal; to thaw (of river) |
| 开河期 | kāi hé qī | thawing and opening up of frozen river in spring |
| 开源 | kāi yuán | to expand one's financial resources; abbr. for 开放源码 |
| 开源节流 | kāi yuán jié liú | lit. to open a water source and reduce outflow (idiom); to increase income and save on spending; to broaden the sources of income and economize on expenditure |
| 开溜 | kāi liū | to leave in stealth; to slip away |
| 开满 | kāi mǎn | to bloom abundantly |
| 开漳圣王 | Kāi zhāng shèng wáng | Sacred King, founder of Zhangzhou, posthumous title of Tang dynasty general Chen Yuanguang (657-711) 陈元光 |
| 开灯 | kāi dēng | to turn on the light |
| 开炉 | kāi lú | to open a furnace; to start up a furnace |
| 开尔文 | Kāi ěr wén | Lord Kelvin 1824-1907, British physicist (William Thomson); Kelvin (temperature scale) |
| 开犁 | kāi lí | to start plowing; to plow the first furrow |
| 开瓶费 | kāi píng fèi | corkage fee |
| 开疆 | kāi jiāng | to pioneer a frontier area; to open up new territory |
| 开发人员 | kāi fā rén yuán | developer |
| 开发区 | kāi fā qū | development zone |
| 开发周期 | kāi fā zhōu qī | development cycle; development period |
| 开发商 | kāi fā shāng | developer (e.g. real-estate, software etc) |
