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开 — pronunciations, definitions, and tags
HanziPinyinEnglishTags
kāito openHSK 1, v, 4 strokes, radical 廾, rank #155, Easy
kāito startHSK 1, v, 4 strokes, radical 廾, rank #155, Easy
kāito turn onHSK 1, v, 4 strokes, radical 廾, rank #155, Easy
kāito boilHSK 1, v, 4 strokes, radical 廾, rank #155, Easy
kāito write out (a prescription, check, invoice etc)HSK 1, v, 4 strokes, radical 廾, rank #155, Easy
kāito operate (vehicle)HSK 1, v, 4 strokes, radical 廾, rank #155, Easy
kāiabbr. for 開爾文HSK 1, v, 4 strokes, radical 廾, rank #155, Easy
kāi>开尔文 degrees KelvinHSK 1, v, 4 strokes, radical 廾, rank #155, Easy
kāito open; to start, to initiate, to beginHSK 1, v, 4 strokes, radical 廾, rank #155, Easy
kāito operate (a vehicle)HSK 1, unknown, 4 strokes, radical 廾, rank #155, Easy
kāicarat (gold)HSK 1, unknown, 4 strokes, radical 廾, rank #155, Easy
kāiabbr. for Kelvin, 開爾文|开尔文[Kai1 er3 wen2]HSK 1, unknown, 4 strokes, radical 廾, rank #155, Easy
kāiabbr. for 開本|开本[kai1 ben3], book formatHSK 1, unknown, 4 strokes, radical 廾, rank #155, Easy
kāi(kai1) T1
  1. 1to open
  2. 2to start
Listen to the audio pronunciation 3 times to gain XP
March 24, 2026
(開)kāi(kai1)

The character 开 (kāi) primarily means 'to open' or 'to start.' It is widely used in various contexts, such as opening a door, starting a vehicle, or initiating a process like boiling water. This versatility makes it a fundamental verb in everyday conversation.

Strokes4RadicalFrequency#155DifficultyEasy
Cultural Note

In Chinese culture, the act of 开 (to open) symbolizes new beginnings and opportunities, often associated with auspicious occasions like opening a business or starting a new year. For instance, many people celebrate the opening of a new venture with ceremonies for good luck.

Memory Tip

Think of 开 (kāi) as a door being pushed open, representing the action of starting something new. The character resembles a door (the top line) with the bottom stroke symbolizing the movement to open it, which helps you remember both its meaning and pronunciation.

Meanings of 开

kāi(kai1)
1to open
2to start
Exercise 1 of 2

Listen & Choose the Meaning

Choose the correct answer:

About 开

Simplified
Traditional
4Strokes
Radical
动词dòngcíverb (v.)Part of Speech
#155Frequency Rank
HSK 2.0L1HSK 3.0L1ElementaryTOCFLL1HSKKL1BCTCEFRA1

Podcast: 开

JasonAmy

Podcast:

Listen to Jason & Amy break down this word for you

AI Study Notes for 开

Quick Contrast

开 (kāi) vs 打开 (dǎkāi) — use 开 for starting or initiating actions more generally, while 打开 specifically emphasizes the action of opening something physically.

Memory Mnemonic

Think of 开 (kāi) as a door being pushed open, representing the action of starting something new. The character resembles a door (the top line) with the bottom stroke symbolizing the movement to open it, which helps you remember both its meaning and pronunciation.

Usage Notes

Common mistakes include confusing 开 (kāi) with other similar-sounding verbs. It is used in both formal and informal contexts, but be careful with tone; always pronounce it as 'kāi' (first tone) to avoid misunderstandings. Typical collocations include 开门 (kāi mén - to open the door) and 开车 (kāi chē - to drive).

HSK Study Tips

As a HSK Level 1 word, 开 (kāi) connects with other basic verbs and actions, making it foundational for building simple sentences. Students should focus on practicing its usage in various contexts to enhance their vocabulary and speaking skills.

Cultural Note

In Chinese culture, the act of 开 (to open) symbolizes new beginnings and opportunities, often associated with auspicious occasions like opening a business or starting a new year. For instance, many people celebrate the opening of a new venture with ceremonies for good luck.

Common Mistakes

Learners often mix up 开 (kāi) with other verbs like 关 (guān - to close). For example, saying '关门' (guān mén) when they mean to say 'open the door' instead of '开门' (kāi mén). Always remember that 开 is for opening or starting.

AI-enhanced 2026-03-24

Pronunciation of 开

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Etymology of 开

Formation TypeIdeographic 指事
六书 ClassificationIdeograph (指事字)~2% of characters
Explanation

Simplified form of 開. Pictograph of two hands opening the bolt on a door. The traditional component 門 was removed for simplification.

Memory Hint

Simplified form of 開; hands 廾 lifting the latch 一 of a door

Learn more about Ideograph (指事字) characters
Exercise 1 of 1

Character Formation Type

What type of character formation is 开?

Decomposition of 开

IDS Structure⿱一廾
Full Character
=
yi1
top
gong3
bottom
Exercise 1 of 2

Identify the Components

Which of these is a component of 开?

Write 开

Practice writing stroke by stroke. Watch the animation to learn the stroke order, then try writing it yourself.

Write correctly 3 times to earn XP

Grammar Patterns of 开

开 functions as a verb — the action or state of the sentence. The Chinese order is Subject + Verb + Object (我吃饭). Negate it with 不 (habitual / future) or 没(有) (completed action). Add aspect markers like 了, 过, 着 directly after the verb. It carries 13 related meanings, each with its own usage notes below. The patterns below break down its most common sentence frames, with example sentences and practice buttons (Listen, Practice Writing, Practice Speaking) for each one.

是…的 emphasis是 + [V] + 的
HSK 3

...

这是我开的车。

Zhè shì wǒ kāi de chē.

This is the car that I drove.

Exercise 1 of 4

Complete the Sentence

他正在跟老板____会。

He's in a meeting with the boss right now.

Common Confusions with 开

vs
kǎi

Similar sound but different meaning.

开 means to open or turn on, while 关 means to close or turn off.

1

请开门。/ 请关门。

开 means to open or turn on, while 关 means to close or turn off.

💡开 has an open shape, while 关 has a closed shape.
Exercise 1 of 1

Spot the Difference

Which character means "to open"?

or

Usage Notes for 开

Misuse in phrasesCommon Error

Learners often confuse 开 with 关 when describing actions related to doors or devices.

1

我想关灯。

I want to turn off the light.

Example Sentences for 开 (10)

Listen to all sentences once to receive XP
1
我不开车,公共汽车条件又太糟糕。

wǒ bù kāi chē, , gōng gòng qì chē tiáo jiàn yòu tài zāo。

I don't drive and the buses are quite hopeless.
2
我无论何时开口,从不夸夸其谈。

wǒ wú lùn hé shí kāi kǒu, , cóng bù kuā kuā qí。

Whenever I open my mouth I don't half waffle on.
3
我离开剑桥时,透支了1万英镑。

wǒ lí kāi jiàn qiáo shí, , tòu zhī1 le 1 wàn。

When I left Cambridge I had a £10,000 overdraft.
4
我老是要把他从壁炉边拉开。

wǒ lǎo shì yào bǎ tā cóng bì lú biān lā kāi。

I was forever dragging him away from the fireplace.
5
最近我开始经常散步和骑自行车。

zuì jìn wǒ kāi shǐ jīng cháng sàn bù hé qí zì háng chē。

Recently I've started to do a lot of walking and cycling.
6
“我要走,离开他。”劳拉·斯特宾停了下来,眼里闪烁着光芒。

“ “ wǒ yào, zǒu , lí。” kāi tā· 。” láo lā · sī tè bīn, tíng le xià lái , yǎn lǐ。

"I shall go, leave him." Laura Stebbing stopped, her eyes glistening.
7
她张开双臂,紧紧地拥抱了我。

tā zhāng kāi shuāng bì, , jǐn jǐn dì yōng bào le。

She opened her arms and gave me a big hug.
8
她突然张开手臂搂住我的脖子,然后吻了我一下。

tā tū rán zhāng kāi shǒu bì lǒu zhù wǒ de bó zǐ, , rán hòu wěn le wǒ yī。

She flung her arms around my neck and kissed me.
9
队友们经常开我的玩笑。

duì yǒu mén jīng cháng kāi wǒ de wán xiào。

I got quite a lot of ribbing from my team-mates.
10
现在人们开始意识到必须采取断然的行动。

xiàn zài rén mén kāi shǐ yì shí dào bì xū cǎi qǔ duàn rán de háng dòng。

Now there is a dawning realisation that drastic action is necessary.

Cultural Notes for 开

🏮Cultural insight

In Chinese culture, the act of 开 (to open) symbolizes new beginnings and opportunities, often associated with auspicious occasions like opening a business or starting a new year. For instance, many people celebrate the opening of a new venture with ceremonies for good luck.

Word Family of 开

Compounds22
bing4and
xing2to appear
yan2to grind
Xing2surname Xing
yan2beautiful, handsome; seductive
jing1thorns, brambles; surname
Xing2a state in Hebei province; surname
qian1the name of a mountain
Qian1marsh; to float; the name of a river in Shangdong
ji1hairpin; fifteen-year-old girl
jian3blister, callus
kai1to open; to start, to initiate, to begin
Words Containing This Character20
开始kāishǐto begin開始
kāito open
离开líkāito depart離開
开心kāixīnto feel happy開心
开发kāifāto develop開發
打开dǎkāito open打開
开展kāizhǎnto launch開展
公开gōngkāipublic公開
召开zhàokāito convoke召開
开枪kāiqiāngto open fire開槍
开放kāifàngto bloom開放
展开zhǎnkāito unfold展開
放开to let go放開
开车kāichēto drive a car開車
开玩笑kāiwánxiàoto play a joke開玩笑
分开fēnkāito separate分開
开口kāikǒuto open one's mouth開口
开门to open for business開門
走开zǒukāito leave走開
开通kāitōngto open up (windows for air, ideas for discussion, transportation routes etc)開通
Exercise 1 of 4

Compound Meaning

What does 并 mean?

Frequently Asked Questions about 开

Common phrases include 开车 (kāi chē - to drive), 开门 (kāi mén - to open the door), and 开会 (kāi huì - to hold a meeting).