内 (nèi): inside, inner, internal

内 (nèi) is a Chinese character meaning “inside.” Classified as HSK Level 4 (HSK 3.0 Standard, CLEC 2022), it is composed of 冂 (structural) and 人 (structural). It ranks #175 in character frequency (SUBTLEX-CH corpus).

Etymologically derived, 内 a man 人  entering a door 冂. Its radical form 冂 (wide) appears in many related characters such as 再 (zài, again), 冒 (mào, to emit), 册 (cè, book).

Spoken pronunciation

Definitions

  1. inside
  2. inner
  3. internal

Etymology & Origin

内

ideographicA man 人  entering a door 冂

Decomposition: ⿻冂人 (layout: overlay)

Stroke Order

1
2
3
4

Practice writing 内 with real-time feedback — trace each stroke in the correct order and build muscle memory in the HanziFeed app.

Words & Compounds

HSK Vocabulary with 内

WordPinyinMeaningHSK
内心nounnèi xīnheart4
内容nounnèi róngcontent4
内部nounnèi bùinterior5
内衣nounnèi yīundergarment6
在内nounzài nèi(included) in it5
以内nounyǐ nèiwithin4
内涵nounnèi hánmeaningful content6
内科nounnèi kēinternal medicine6
内外nounnèi wàiinside and outside6
海内外nounhǎi nèi wàidomestic and international6

Common Compounds

WordPinyinMeaning
之内postpzhī nèiinside
内裤nounnèi kùunderpants
体内tǐ nèiwithin the body
内疚adjectivenèi jiùguilty conscience
国内nounguó nèidomestic
内在adjectivenèi zàiinner
室内nounshì nèiindoor
内战nounnèi zhàncivil war
内脏nounnèi zànginternal organs
内幕nounnèi mùinside story
内阁nounnèi gé(government) cabinet
内线nèi xiàninside source
内务部nèi wù bùMinistry of Internal Affairs
内奸nounnèi jiānundiscovered traitor
委内瑞拉proper-nounwěi nèi ruì lāVenezuela
106
Total compounds
74
As first character
23
As last character
4
As middle character

内 appears in 106 compound words: 74 as the first character, 23 as the last, and 4 in a middle position. Compound statistics computed from SUBTLEX-CH and HSK 3.0 vocabulary data.

Strongest Collocations

Characters that most frequently co-occur with 内 in natural Chinese text, ranked by NPMI (Normalized Pointwise Mutual Information) — a statistical measure of association strength.

境jìng
0.646144,232 co-occurrences
围wéi
0.53638,292 co-occurrences
陆lù
0.53540,652 co-occurrences
范fàn
0.53037,778 co-occurrences
阁gé
0.52426,050 co-occurrences
容róng
0.51499,500 co-occurrences
蒙méng
0.46025,946 co-occurrences
国guó
0.440111,708 co-occurrences
省shěng
0.43744,952 co-occurrences
部bù
0.435125,336 co-occurrences

Idioms & Chengyu (12)

锋芒内敛fēng máng nèi liǎnHSK 7+

to be talented yet self-effacing (idiom)

phrase
姆巴巴内MǔbābānèiHSK 7+

Mbabane (a city, the capital city of Eswatini)

内忧外患nèiyōuwàihuànHSK 6+

internal and external troubles; internal upheaval and external invasions

phrase
攘外安内rángwài'ānnèiHSK 7+

to repel foreign aggression while pacifying the interior

phrase
塞内加尔sài nèi jiā ěrHSK 6+

Senegal

phrase
室内设计shìnèi shèjìHSK 5+

interior design

noun
外宽内忌wài kuān nèi jìHSK 7+

magnanimous on the outside, but hateful on the inside (idiom)

phrase
委内瑞拉WěinèiruìlāHSK 7+

Venezuela (a country in South America)

影子内阁yǐngzi nèigéHSK 7+

shadow cabinet

noun
色厉内荏sèlìnèirěnHSK 4+

to appear tough on the outside but be weak and timid on the inside

phrase

Showing 10 of 12 idioms containing 内.

Example Sentences

AI-Generated

写好内字需要掌握正确的笔画顺序。

xiě hǎo nèi zì xū yāo zhǎng wò zhēng què de bǐ huà shùn xù .

To write the character "内" correctly, one must master the proper stroke order.

LtnFeb 2026

阿曼证实美伊2/26日内瓦再谈 传德黑兰愿就核计画让步

ā 曼 zhèng shí měi yī 2 2 6 rì nèi wǎ zài tán chuán dé hēi lán yuàn jiù hé jì huà ràng bù

Oman confirmed that the United States and Iran will talk again in Geneva on 2/26 and it is rumored that Tehran is willing to make concessions on the nuclear program

東方日報Feb 2026

新春长假尾声至 内地客最后冲刺

xīn chūn cháng jiǎ wěi shēng zhì nèi dì kè zuì hòu chōng cì

The end of the Chinese New Year holiday is the last sprint of mainland guests

Irna ChineseFeb 2026

内塔尼亚胡宣布组建针对穆斯林的新联盟

nèi tǎ ní yà hú xuān bù zǔ jiàn zhēn duì mù sī lín de xīn lián méng

Netanyahu announced the formation of a new coalition against Muslims

百度新闻Feb 2026

一环内禁燃!云岩区春节期间烟花爆竹禁限放区域、...

yī huán nèi jīn rán ! yún yán qū chūn jié qī jiān yān huā bào zhú jīn xiàn fàng qū yù , . . .

No combustion in the first ring! Yunyan District Fireworks and Firecrackers Prohibited and Restricted Areas during the Spring Festival、...

百度新闻Feb 2026

特朗普向伊朗下最后通牒:伊朗15天内必须与美国达成..

tè lǎng pǔ xiàng yī lǎng xià zuì hòu tōng 牒 : yī lǎng 1 5 tiān nèi bì xū yǔ měi guó dá chéng . .

Trump issued an ultimatum to Iran: Iran must reach an agreement with the United States within 15 days:

Tatoeba

内心世界很丰富,不知该如何表达了!

Nèixīnshìjiè hěn fēngfù, bù zhī gāi rúhé biǎodá le!

Deep down, everyone is rich and beautiful, but we don't know how to express it!

Tatoeba

很难在2、3年内掌握法语。

Hěn nán zài liǎng, sān nián nèi zhǎngwò Fǎyǔ.

It's quite difficult to master French in 2 or 3 years.

Tatoeba

我下定决心要在三年之内达成目标。

Wǒ xiàdìngjuéxīn yào zài sān nián zhīnèi dáchéng mùbiāo.

I have made up my mind to achieve my goals in three years.

Tatoeba

这瓶内有一点威士忌。

Zhè píng nèi yǒu yīdiǎn wēishìjì.

There is a bit of whisky in this bottle.

Character Family

冂 Radical Family — Characters sharing the wide radical

Homophones — Characters pronounced nèi

Frequently Asked Questions

What does 内 (nèi) mean in Chinese?
内 (nèi) primarily means "inside." It is classified as HSK Level 4, making it an upper-intermediate character. It ranks #175 in character frequency.
What's the difference between 内 and 外?
内 (nèi) and 外 (wài) are often confused. antonym. The key distinguishing feature: 内 (inside) vs 外 (outside).
How many strokes does 内 have?
内 is written with 4 strokes. The correct stroke order matters for recognition and handwriting speed — practice with the animated guide above to build proper technique.
What is the radical of 内?
The radical associated with 内 is 冂 (wide). This radical appears in many characters related to wide.
What are the components of 内?
内 is composed of: 冂 (structural), 人 (structural). Its IDS decomposition is ⿻冂人 with a overlay layout. Understanding the components helps with both memorization and recognizing related characters.
What are common words containing 内?
Common words with 内 include: 内心 (nèi xīn, "heart"); 内容 (nèi róng, "content"); 之内 (zhī nèi, "inside"); 内部 (nèi bù, "interior"); 内裤 (nèi kù, "underpants"). There are over 106 compound words containing this character.
What characters sound the same as 内 (nèi)?
Several characters share the pronunciation nèi: 馁 ((bound form) hungry). Context and tones help distinguish between them in speech and writing.
Is 内 the same in simplified and traditional Chinese?
Yes, 内 is written the same way in both simplified and traditional Chinese.

Practice writing 内 with real-time feedback

Trace stroke sequences, hear spoken pronunciation, and build lasting retention with spaced repetition in the HanziFeed app.

Character data sourced from Unihan (Unicode Consortium), SUBTLEX-CH frequency corpus (Cai & Brysbaert, 2010), and Make Me a Hanzi (stroke data). Collocation strength measured via NPMI (Normalized Pointwise Mutual Information). Verified by the HanziFeed linguistics team.

HSK classification follows the HSK 3.0 Standard (Center for Language Education and Cooperation, CLEC, 2022 revision). Idiom data from Wiktionary (CC BY-SA 3.0).

Data last verified: March 2026.