| 内 | nèi | inside; inner; internal; within; interior |
| 内容 | nèi róng | content; substance; details; CL:个,项 |
| 内部 | nèi bù | interior; inside (part, section); internal |
| 国内 | guó nèi | domestic; internal (to a country); civil |
| 党内 | dǎng nèi | within the party (esp. Chinese communist party) |
| 室内 | shì nèi | indoor |
| 内外 | nèi wài | inside and outside; domestic and foreign; approximately; about |
| 以内 | yǐ nèi | within; less than |
| 之内 | zhī nèi | inside; within |
| 内在 | nèi zài | intrinsic; innate |
| 内蒙古 | Nèi měng gǔ | Inner Mongolia; abbr. for Inner Mongolia autonomous region 内蒙古自治区 |
| 内战 | nèi zhàn | civil war |
| 内阁 | nèi gé | (government) cabinet |
| 内地 | nèi dì | inland; interior |
| 内政 | nèi zhèng | internal affairs (of a country) |
| 内心 | nèi xīn | heart; innermost being |
| 内能 | nèi néng | internal energy |
| 河内 | Hé nèi | Hanoi, capital of Vietnam |
| 内燃机 | nèi rán jī | internal combustion engine |
| 日内瓦 | Rì nèi wǎ | Geneva, Switzerland |
| 对内 | duì nèi | internal; national; domestic (policy) |
| 委内瑞拉 | Wěi nèi ruì lā | Venezuela |
| 几内亚 | Jī nèi yà | Guinea |
| 内脏 | nèi zàng | internal organs; viscera |
| 人民内部矛盾 | rén mín nèi bù máo dùn | internal contradiction among the people (pretext for a purge) |
| 内燃机车 | nèi rán jī chē | automobile |
| 内部矛盾 | nèi bù máo dùn | internal contradiction |
| 塞内加尔 | Sài nèi jiā ěr | Senegal |
| 内存 | nèi cún | internal storage; computer memory; random access memory (RAM) |
| 市内 | shì nèi | inside the city |
| 国内战争 | guó nèi zhàn zhēng | civil war; internal struggle |
| 内耗 | nèi hào | internal friction; internal dissipation of energy (in mechanics); fig. waste or discord within an organization |
| 内经 | Nèi jīng | same as 黄帝内经, Yellow Emperor's internal canon, medical text c. 300 BC |
| 几内亚比绍 | Jī nèi yà Bǐ shào | Guinea-Bissau |
| 内奸 | nèi jiān | undiscovered traitor; enemy within one's own ranks |
| 赤道几内亚 | Chì dào Jī nèi yà | Equatorial Guinea |
| 内行 | nèi háng | expert; adept; experienced; an expert; a professional |
| 海内 | hǎi nèi | the whole world; throughout the land; everything under the sun |
| 内乱 | nèi luàn | internal disorder; civil strife; civil unrest |
| 内科 | nèi kē | medicine; "internal" medicine, i.e. treatment by administering drugs, as opposed to surgical intervention 外科; medical department |
| 内涵 | nèi hán | meaning; content; essential properties implied or reflected by a notion; intention; connotation; self-possessed |
| 内务部 | nèi wù bù | Ministry of Internal Affairs |
| 内罗毕 | Nèi luó bì | Nairobi, capital of Kenya |
| 内务 | nèi wù | internal affairs; domestic affairs; family affairs; (trad.) affairs within the palace |
| 国内外 | guó nèi wài | domestic and international; at home and abroad |
| 内幕 | nèi mù | inside story; non-public information; behind the scenes; internal |
| 内皮 | nèi pí | (med.) endothelium; thin skin on the inside of some fruits (e.g. oranges) |
| 内人 | nèi rén | my wife (humble) |
| 内分泌 | nèi fēn mì | endocrine (internal secretion, e.g. hormone) |
| 内场 | nèi chǎng | infield (baseball) |
