| 口 | kǒu | mouth; classifier for things with mouths (people, domestic animals, cannons, wells etc); classifier for bites or mouthfuls |
| 出口 | chū kǒu | an exit; CL:个; to speak; to export; (of a ship) to leave port |
| 人口 | rén kǒu | population |
| 进口 | jìn kǒu | to import; imported |
| 口号 | kǒu hào | slogan; catchphrase; CL:个 |
| 开口 | kāi kǒu | open one's mouth; start to talk |
| 门口 | mén kǒu | doorway; gate; CL:个 |
| 一口 | yī kǒu | readily; flatly (deny, admit and so on); a mouthful; a bite |
| 借口 | jiè kǒu | to use as an excuse; on the pretext |
| 口气 | kǒu qì | tone of voice; the way one speaks; manner of expression; tone |
| 牲口 | shēng kou | animals used for their physical strength (mules, oxen etc); beast of burden |
| 港口 | gǎng kǒu | port; harbor |
| 汉口 | Hàn kǒu | Hankou, part of Wuhan 武汉 at the junction of Han river and Changjiang in Hubei |
| 一口气 | yī kǒu qì | one breath; in one breath; at a stretch |
| 入口 | rù kǒu | entrance |
| 风口 | fēng kǒu | air vent; drafty place; wind gap (geology); tuyere (furnace air nozzle) |
| 口袋 | kǒu dài | pocket; bag; sack; CL:个 |
| 窗口 | chuāng kǒu | window; opening providing restricted access (e.g. customer service window); computer operating system window; fig. medium; intermediary; showpiece; testing ground |
| 口头 | kǒu tóu | oral; verbal |
| 户口 | hù kǒu | population (counted as number of households for census or taxation); registered residence |
| 口腔 | kǒu qiāng | oral cavity |
| 缺口 | quē kǒu | nick; jag; gap; shortfall |
| 河口 | hé kǒu | estuary; the mouth of a river |
| 切口 | qiē kǒu | incision; notch; slit; gash; margin of a page; trimmed edge (of a page in a book) |
| 切口 | qiè kǒu | slang; argot; private language used as secret code |
| 口供 | kǒu gòng | confession; oral evidence, as opposed to written evidence 笔供; statement made under examination |
| 伤口 | shāng kǒu | wound; cut |
| 口粮 | kǒu liáng | ration |
| 口味 | kǒu wèi | a person's preferences; tastes (in food); flavor |
| 口径 | kǒu jìng | caliber; diameter of opening |
| 洞口 | dòng kǒu | cave mouth; tunnel entrance; Dongkou county in Shaoyang 邵阳, Hunan |
| 茬口 | chá kǒu | harvested land left for rotation; an opportunity |
| 口吻 | kǒu wěn | tone of voice; connotation in intonation; accent (regional etc); snout; muzzle; lips; protruding portion of an animal's face |
| 井口 | jǐng kǒu | entrance to mine |
| 虎口 | hǔ kǒu | tiger's den; dangerous place; the web between the thumb and forefinger of a hand |
| 口岸 | kǒu àn | a port for external trade; a trading or transit post on border between countries |
| 上口 | shàng kǒu | to be able to read aloud fluently; to be suitable (easy enough) for reading aloud |
| 渡口 | dù kǒu | ferry |
| 胸口 | xiōng kǒu | pit of the stomach |
| 口令 | kǒu lìng | oral command; a word of command (used in drilling troops or gymnasts); password (used by sentry) |
| 口水 | kǒu shuǐ | saliva |
| 张口 | zhāng kǒu | to gape; to yawn; to open one's mouth; to start speaking; to talk carelessly; to talk out of place |
| 可口 | kě kǒu | tasty; to taste good |
| 山口 | Shān kǒu | Yamaguchi (name and place name); Yamaguchi prefecture in southwest of Japan's main island Honshū 本州 |
| 口风 | kǒu fēng | meaning behind the words; what sb really means to say; one's intentions as revealed in one's words; tone of speech |
| 满口 | mǎn kǒu | a mouthful; (of speech) pure: perfect accent; substance of speech all of a kind (e.g. all lies); unreservedly (accept, agree, promise etc) |
| 海口 | hǎi kǒu | estuary; coastal inlet; river mouth; seaport; see also 夸海口; Haikou prefecture-level city and capital of Hainan Province 海南省 |
| 口吃 | kǒu chī | stammering; stuttering |
| 两口子 | liǎng kǒu zi | husband and wife |
| 刀口 | dāo kǒu | cut; incision |
