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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)yi 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

By ear

Play it, then pick what 一 means.

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
Exercise 1 of 1

Origin

What kind of character 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.

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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

Fill the gap

Type the missing word. Pinyin works; then pick the character.

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

Which one

Which one 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 gǎnjué dào hòu yāo yízhèn jù tòng。

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

wǒ yìzhí lèyú chángshì xīn chǎnpǐn。

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, suǒyǐ tāmen qiáobùqǐ wǒ。

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 yìzhí jiānchí yòng xīnxiān shuǐguǒ 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, bùdébù zhuāzhù yī bǎ yǐzi wěn zhù zìjǐ。

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 shèngxià de kù rè zhēn ràng wǒ dàchīyìjīng。

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 zhǐzé wǒ bǎ guòqù wàng de yìgānèrjìng。

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

wǒ jìnlái shuāngshǒu yìzhí téngtòng mámù。

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 rènwéi chángqī fú àn de shēnghuó yīdiǎn yě búshì gě 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。

tāmen de xuè pēn le wǒ yìshēn。 wǒ jīhū hūn le guòqù。

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.

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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zài(located) at
来láito come
生shēngto be born
下xiàdown
天tiānday
开kāito open
后hòusurname Hou
再zàiagain
前qiánfront
干gānold variant of 乾
应yīngsurname Ying
同tóng(used in given names)
本běnroots or stems of plants
或huòmaybe
三sānsurname San
兴xīngsurname Xing
夫fūhusband
至zhìto arrive
光guānglight
司sīsurname Si
首shǒuhead
未wèinot yet
丽líKorea
百bǎisurname Bai
存cúnto exist
妻qīwife
具jùtool
画huàto draw
丝sīsilk
武wǔsurname Wu
丹dāncinnabar, red, vermilion; pellet, powder
末mòtip
夏xiàthe Xia or Hsia dynasty c. 2000 BC
贵guìexpensive
旦dàndawn
丁dīngsurname Ding
灭mièto extinguish or put out
互hùmutual
隆lōngsurname Long
页yèpage
册cèbook
虐nüèoppressive
亏kuīdeficiency
丛cóngcluster
歹dǎibad
曹cáoministers, officials; a company; surname
匀yúneven
贮zhùto store, to stockpile, to hoard
疟nüèmalaria; intermittent fever
戛jiálance; to lightly tap or strike
闩shuānbolt, latch, crossbar
兀wùweak; lame
戸hù
卅sàthirty, thirtieth
丕pīgreat, grand, glorious, distinguished
寅yínto respect, to revere; respectfully; 3rd terrestrial branch
伫zhùto wait; to look towards; to turn one's back on
丞chéngto aid, to assist, to rescue
榖gǔ
酉yǒuwine; wine vessel; chemical
戌xū11th terrestrial branch
蚩chīworm; ignorant, rustic; to laugh at
頁yèpage, sheet, leaf
苎zhùChina grass, ramie
丒chǒu
丠qiū
亼jíto assemble, to gather together
佥qiānall, together, unanimous
倶jù
卄niàntwenty, twentieth
厷gōngforearm, upper arm; round
奡ào
巠jīngunderground river; flowing water
巿fúto revolve, to turn, to make a circuit
弌yī
戋jiānsmall, narrow; tiny, little
権quán
纻zhù
霊líng
靣miàn
鬲géearthen pot, iron cauldron
鼍tuólarge reptile, water lizard
仺cāng
冡méngold variant of 蒙[meng2]
單dānsingle, individual, only; lone
坙jīng
妛chī
婯lì
宐yí
屰nìdisobedient
巵zhīmeasuring cup; wine flask
巺xùn
帀zāto rotate, to revolve, to make a circuit
弖hù
旹shí
溼shī
潅guàn
畐fúto fill; a roll of cloth
畫huàpicture, painting, drawing; to draw
瞉kòu
竵wāi
糓gǔ
貮èr
貴guìexpensive, costly; valuable, precious
辷yī
鋄wàn
錽wàn
閂shuānbolt, latch, crossbar
闠huì
麗lìbeautiful, elegant, magnificent
黴méibacteria, fungi, mold
鼉tuólarge 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yīgèrénalone (without company)一個人
一点yīdiǎna bit一點
第一dìyīfirst
之一zhīyīone of (sth)
统一tǒngyīto unify統一
第一次dìyīcìfirst
一边yìbiānone side一邊
一旦yídànif
一半yíbànhalf
一致yízhìunanimous
Exercise 1 of 4

Characters with 一

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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