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一 — pronunciations, definitions, and tags
HanziPinyinEnglishTags
一yīoneHSK 1, m, 1 strokes, radical 一, rank #21, Easy
一yī1HSK 1, m, 1 strokes, radical 一, rank #21, Easy
一yīsingleHSK 1, m, 1 strokes, radical 一, rank #21, Easy
一yīa (article)HSK 1, m, 1 strokes, radical 一, rank #21, Easy
一yīas soon asHSK 1, m, 1 strokes, radical 一, rank #21, Easy
一yīentireHSK 1, m, 1 strokes, radical 一, rank #21, Easy
一yīwholeHSK 1, m, 1 strokes, radical 一, rank #21, Easy
一yīallHSK 1, m, 1 strokes, radical 一, rank #21, Easy
一yīthroughoutHSK 1, m, 1 strokes, radical 一, rank #21, Easy
一yī"one" radical in Chinese characters (Kangxi radical 1)HSK 1, m, 1 strokes, radical 一, rank #21, Easy
一yīone; a, an; aloneHSK 1, m, 1 strokes, radical 一, rank #21, Easy
一yīalso pr. [yao1] for greater clarity when spelling out numbers digit by digitHSK 1, unknown, 1 strokes, radical 一, rank #21, Easy
yī(yi1) T1
  1. 1one
  2. 21
Listen to the audio pronunciation 3 times to gain XP
March 24, 2026

一yī(yi1)

The character 一 (yī) means 'one' and is used to denote the numeral 1, signifying singularity or unity. It can also function as an article meaning 'a' or 'an' in certain contexts, and serves as the first radical in many Chinese characters, indicating its foundational nature in the language.

Strokes1Radical一Frequency#21DifficultyEasy
Cultural Note

In Chinese culture, the number one symbolizes unity and beginnings, often used in expressions related to starting new ventures, as it represents the first step in any journey.

Memory Tip

Imagine a single line drawn across a page, representing the number one. Picture a lone soldier standing upright, symbolizing unity and singularity, which connects both the shape of the character 一 and its meaning.

Meanings of 一

yī(yi1)
1one
21
Exercise 1 of 3

Listen & Choose the Meaning

Choose the correct answer:

About 一

一Simplified
1Strokes
一Radical
数词shùcínumeral (num.)Part of Speech
#21Frequency Rank
HSK 2.0L1HSK 3.0L1ElementaryTOCFLL1HSKKL1CEFRA1

Podcast: 一

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Podcast: 一

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AI Study Notes for 一

Usage Notes

Common mistakes include using 一 in contexts that require other numerals or articles, such as saying '一 apple' instead of '一个苹果' (yí gè píng guǒ). It's important to remember that 一 can also mean 'whole' or 'entire' in phrases like '一切' (yī qiè), meaning 'everything.'

HSK Study Tips

As an HSK Level 1 word, 一 is foundational for counting and basic sentence structure. Students should practice its pronunciation and learn to use it in various contexts, such as in counting and basic sentence formations.

Common Mistakes

Learners often confuse 一 with the character 乙 (yǐ), which represents the second position in the Chinese heavenly stems. For example, saying '一二' (yī èr) as 'one two' is correct, but saying '乙二' is incorrect and should be '二' (èr) for 'two'.

AI-enhanced 2026-03-24

Pronunciation of 一

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Etymology of 一

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

A single horizontal stroke, representing the number one.

Memory Hint

Represents heaven (天), earth (旦), or the number 1

Learn more about Ideograph (指事字) characters

Jason Etymology Detective

Case file: 一

A single horizontal stroke, representing the number one.

  1. 1The giveawayRepresents heaven (天), earth (旦), or the number 1
  2. 2On the record asideographic — someone drew an idea rather than an object.

Every clue here comes from the character's recorded structure — nothing is guessed.

Want the full history of 一? Jason searches the paleographic record, weighs the competing accounts and judges the popular story.

Charged once for this character — everyone reads it afterwards.
Exercise 1 of 1

Character Formation Type

What type of character formation is 一?

How to say one in Chinese

“one” in Chinese is一yī

The character 一 (yī) means 'one' and is used to denote the numeral 1, signifying singularity or unity. It can also function as an article meaning 'a' or 'an' in certain contexts, and serves as the first radical in many Chinese characters, indicating its foundational nature in the language.

When to use 一

Common mistakes include using 一 in contexts that require other numerals or articles, such as saying '一 apple' instead of '一个苹果' (yí gè píng guǒ). It's important to remember that 一 can also mean 'whole' or 'entire' in phrases like '一切' (yī qiè), meaning 'everything.'

What learners get wrong

Learners often confuse 一 with the character 乙 (yǐ), which represents the second position in the Chinese heavenly stems. For example, saying '一二' (yī èr) as 'one two' is correct, but saying '乙二' is incorrect and should be '二' (èr) for 'two'.

Write 一

一

Practice writing 一 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 一

一 functions as a number. It almost always combines with a measure word before a noun (三个人, 五本书). Standalone numbers are rare outside of math or counting. It carries 12 related meanings, each with its own usage notes below. The example sentences below show it in action, with practice buttons (Listen, Practice Writing, Practice Speaking) on every line.

Exercise 1 of 4

Complete the Sentence

他____边走路,一边唱歌。

He walks while singing.

Common Confusions with 一

一vs七
qī

Similar in shape and sound, but different in meaning.

一vs二
èr

Similar in shape and sound, but represents a different number.

Exercise 1 of 1

Spot the Difference

Which character means "one"?

or

Example Sentences for 一 (16)

Listen to all sentences once to receive XP
1
我感觉到后腰一阵剧痛。

wǒ gǎn jué dào hòu yāo yī zhèn jù tòng。

I felt a sharp pain in my lower back.
2
我一直乐于尝试新产品。

wǒ yī zhí lè yú cháng shì xīn chǎn pǐn。

I'm always pleased to try out a new variety.
3
我一无所成,所以他们瞧不起我。

wǒ yī wú suǒ chéng, , suǒ yǐ tā mén qiáo bù qǐ。

I wasn't successful, so they looked down on me.
4
我一直坚持用新鲜水果做甜点。

wǒ yī zhí jiān chí yòng xīn xiān shuǐ guǒ zuò tián diǎn。

I tend to stick to fresh fruit for pudding.
5
我踉踉跄跄地,不得不抓住一把椅子稳住自己。

wǒ liáng liáng qiāng qiāng dì, , bù dé bù zhuā zhù yī bǎ yǐ zǐ wěn zhù zì。

I staggered and had to clutch at a chair for support.
6
阿根廷盛夏的酷热真让我大吃一惊。

ā gēn tíng shèng xià de kù rè zhēn ràng wǒ dà chī yī jīng。

I was simply staggered by the heat of the Argentinian high-summer.
7
她指责我把过去忘得一干二净。

tā zhǐ zé wǒ bǎ guò qù wàng dé yī gān èr jìng。

She accuses me of having blocked out the past.
8
我近来双手一直疼痛麻木。

wǒ jìn lái shuāng shǒu yī zhí téng tòng má mù。

I have recently been suffering from pain and numbness in my hands.
9
我认为长期伏案的生活一点也不适合我。

wǒ rèn wéi cháng qī fú àn de shēng huó yī diǎn yě bù shì hé wǒ。

I don't think a sedentary life would altogether suit me.
10
他们的血喷了我一身。我几乎昏了过去。

tā mén de xiě pēn le wǒ yī shēn。 。 wǒ jī hū hūn le guò。

They spurted blood all over me. I nearly passed out.
11
我只有一只猫。

Wǒ zhǐ yǒu yī zhī māo.

I only have one cat.
12
她买了一本书。

Tā mǎi le yī běn shū.

She bought one book.
13
桌子上有一个苹果。

Zhuōzi shàng yǒu yī gè píngguǒ.

There is one apple on the table.
14
我今天只喝了一杯水。

Wǒ jīntiān zhǐ hē le yī bēi shuǐ.

I only drank one glass of water today.
15
他有一个弟弟。

Tā yǒu yī gè dìdi.

He has one younger brother.
16
我只需要一张票。

Wǒ zhǐ xūyào yī zhāng piào.

I only need one ticket.

Cultural Notes for 一

💡Did you know?

The character 一 is simple yet significant in Chinese culture. It symbolizes unity and wholeness, reflecting the idea that everything begins with one.

Word Family of 一

Compounds112
在zai4(located) at
来lai2to come
生sheng1to be born
下xia4down
天tian1day
开kai1to open
后Hou4surname Hou
再zai4again
前qian2front
干gan1old variant of 乾
应ying1surname Ying
同tong2(used in given names)
本ben3roots or stems of plants
或huo4maybe
三San1surname San
兴Xing1surname Xing
夫fu1husband
至zhi4to arrive
光guang1light
司Si1surname Si
首shou3head
未wei4not yet
丽Li2Korea
百Bai3surname Bai
存cun2to exist
妻qi1wife
具ju4tool
画hua4to draw
丝si1silk
武Wu3surname Wu
丹dan1cinnabar, red, vermilion; pellet, powder
末mo4tip
夏Xia4the Xia or Hsia dynasty c. 2000 BC
贵gui4expensive
旦dan4dawn
丁Ding1surname Ding
灭mie4to extinguish or put out
互hu4mutual
隆long1surname Long
页ye4page
册ce4book
虐nüe4oppressive
亏kui1deficiency
丛cong2cluster
歹dai3bad
曹Cao2ministers, officials; a company; surname
匀yun2even
贮zhu4to store, to stockpile, to hoard
疟nüe4malaria; intermittent fever
戛jia2lance; to lightly tap or strike
闩shuan1bolt, latch, crossbar
兀Wu4weak; lame
戸
卅sa4thirty, thirtieth
丕pi1great, grand, glorious, distinguished
寅yin2to respect, to revere; respectfully; 3rd terrestrial branch
伫zhu4to wait; to look towards; to turn one's back on
丞cheng2to aid, to assist, to rescue
榖
酉you3wine; wine vessel; chemical
戌xu111th terrestrial branch
蚩Chi1worm; ignorant, rustic; to laugh at
頁ye4page, sheet, leaf
苎zhu4China grass, ramie
丒
丠
亼ji2to assemble, to gather together
佥qian1all, together, unanimous
倶
卄nian4twenty, twentieth
厷gong1forearm, upper arm; round
奡
巠jing1underground river; flowing water
巿fu2to revolve, to turn, to make a circuit
弌
戋jian1small, narrow; tiny, little
権
纻
霊
靣
鬲Ge2earthen pot, iron cauldron
鼍tuo2large reptile, water lizard
仺
冡meng2old variant of 蒙[meng2]
單dan1single, individual, only; lone
坙
妛
婯
宐
屰ni4disobedient
巵zhi1measuring cup; wine flask
巺
帀za1to rotate, to revolve, to make a circuit
弖
旹
溼
潅
畐fu2to fill; a roll of cloth
畫hua4picture, painting, drawing; to draw
瞉
竵
糓
貮
貴gui4expensive, costly; valuable, precious
辷
鋄
錽
閂shuan1bolt, latch, crossbar
闠
麗li4beautiful, elegant, magnificent
黴mei2bacteria, fungi, mold
鼉tuo2large reptile, water lizard
Words Containing This Character20
一yīone
一起yìqǐtogether
一些yìxiēsome
一定yídìngsurely
一直yìzhíalways
一样yíyàngsame一樣
一下yíxiàone time
一切yíqièevery
一般yìbānsame
进一步jìnyíbùone step further進一步
一个人alone (without company)一個人
一点a bit一點
第一dìyīfirst
之一zhīyīone of (sth)
统一tǒngyīto unify統一
第一次first
一边yìbiānone side一邊
一旦yídànif
一半yíbànhalf
一致yízhìunanimous
Exercise 1 of 4

Compound Meaning

What does 在 mean?

Frequently Asked Questions about 一

Yes, 一 (yī) is commonly used in various Chinese idioms and expressions. For instance, '一见钟情' (yījiàn zhōngqíng) means 'love at first sight.' Understanding how 一 is used in these phrases can help learners grasp its contextual meanings.

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