| 1 | 开始 | 開始 | kāi shǐ | kai1 shi3 | to begin; beginning; to start; initial; Classifiers: 个 | | |
| 2 | 开 | 開 | kāi | kai1 | to open; to start; to turn on; to boil; to write out (a prescription, check, invoice etc); to operate (a vehicle); carat (gold); abbr. for Kelvin, 开尔文 , book format | | |
| 3 | 开展 | 開展 | kāi zhǎn | kai1 zhan3 | to launch; to develop; to unfold; (of an exhibition etc) to open | | |
| 4 | 开发 | 開發 | kāi fā | kai1 fa1 | to exploit (a resource); to open up (for development); to develop | | |
| 5 | 开放 | 開放 | kāi fàng | kai1 fang4 | to bloom; to open; to be open (to the public); to open up (to the outside); to be open-minded; unrestrained by convention; unconstrained in one's sexuality | | |
| 6 | 开会 | 開會 | kāi huì | kai1 hui4 | to hold a meeting; to attend a meeting | | |
| 7 | 开辟 | 開闢 | kāi pì | kai1 pi4 | to open up; to set up; to establish | | |
| 8 | 开口 | 開口 | kāi kǒu | kai1 kou3 | to open one's mouth; to start to talk | | |
| 9 | 开花 | 開花 | kāi huā | kai1 hua1 | to bloom; to blossom; to flower; fig. to burst open; to feel happy or elated; new development grows out | | |
| 10 | 开拓 | 開拓 | kāi tuò | kai1 tuo4 | to break new ground (for agriculture); to open up (a new seam); to develop (border regions); fig. to open up (new horizons) | | |
| 11 | 开支 | 開支 | kāi zhī | kai1 zhi1 | expenditures; expenses; Classifiers: 笔 , 项 ; to spend money; (coll.) to pay wages | | |
| 12 | 开玩笑 | 開玩笑 | kāi wán xiào | kai1 wan2 xiao4 | to play a joke; to make fun of; to joke | | |
| 13 | 开门 | 開門 | kāi mén | kai1 men2 | to open a door (lit. and fig.); to open for business | | |
| 14 | 开办 | 開辦 | kāi bàn | kai1 ban4 | to open; to start (a business etc); to set up | | |
| 15 | 开设 | 開設 | kāi shè | kai1 she4 | to offer (goods or services); to open (for business etc) | | |
| 16 | 开关 | 開關 | kāi guān | kai1 guan1 | power switch; gas valve; to open the city (or frontier) gate; to open and close; to switch on and off | | |
| 17 | 开创 | 開創 | kāi chuàng | kai1 chuang4 | to initiate; to start; to found | | |
| 18 | 开采 | 開採 | kāi cǎi | kai1 cai3 | to extract (ore or other resource from a mine); to exploit; to mine | | |
| 19 | 开水 | 開水 | kāi shuǐ | kai1 shui3 | boiled water; boiling water | | |
| 20 | 开幕 | 開幕 | kāi mù | kai1 mu4 | to open (a conference); to inaugurate | | |
| 21 | 开垦 | 開墾 | kāi kěn | kai1 ken3 | to clear a wild area for cultivation; to put under the plow | | |
| 22 | 开阔 | 開闊 | kāi kuò | kai1 kuo4 | wide; open (spaces); to open up | | |
| 23 | 开除 | 開除 | kāi chú | kai1 chu2 | to expel (a member of an organization); to fire (an employee) | | |
| 24 | 开头 | 開頭 | kāi tóu | kai1 tou2 | beginning; to start | | |
| 25 | 开心 | 開心 | kāi xīn | kai1 xin1 | to feel happy; to rejoice; to have a great time; to make fun of sb | | |