| 口 | kǒu | mouth; classifier for things with mouths (people, domestic animals, cannons, wells etc); classifier for bites or mouthfuls |
| 口号 | kǒu hào | slogan; catchphrase; CL:个 |
| 口气 | kǒu qì | tone of voice; the way one speaks; manner of expression; tone |
| 口袋 | kǒu dài | pocket; bag; sack; CL:个 |
| 口头 | kǒu tóu | oral; verbal |
| 口腔 | kǒu qiāng | oral cavity |
| 口供 | kǒu gòng | confession; oral evidence, as opposed to written evidence 笔供; statement made under examination |
| 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 |
| 口吻 | kǒu wěn | tone of voice; connotation in intonation; accent (regional etc); snout; muzzle; lips; protruding portion of an animal's face |
| 口岸 | kǒu àn | a port for external trade; a trading or transit post on border between countries |
| 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 |
| 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 |
| 口吃 | kǒu chī | stammering; stuttering |
| 口器 | kǒu qì | mouthparts (of animal or insect) |
| 口子 | kǒu zi | a hole; an opening; a cut; a gap; a gash |
| 口实 | kǒu shí | food; salary (old); a pretext; a cause for gossip |
| 口音 | kǒu yīn | oral speech sounds (linguistics) |
| 口音 | kǒu yin | voice; accent |
| 口口声声 | kǒu kou shēng shēng | to keep on saying (idiom); to repeat over and over again |
| 口角 | kǒu jiǎo | corner of the mouth |
| 口角 | kǒu jué | altercation; wrangle; angry argument |
| 口罩 | kǒu zhào | mask (surgical etc) |
| 口述 | kǒu shù | to dictate; to recount orally |
| 口服 | kǒu fú | oral (administered by mouth); to profess conviction; to say that one is convinced |
| 口头语 | kǒu tóu yǔ | pet phrase; regularly used expression; manner of speaking |
| 口语 | kǒu yǔ | colloquial speech; spoken language; vernacular language; slander; gossip; CL:门 |
| 口技 | kǒu jì | beat boxing; vocal mimicry; ventriloquism |
| 口渴 | kǒu kě | thirsty |
| 口舌 | kǒu shé | dispute or misunderstanding caused by gossip; to talk sb round |
| 口琴 | kǒu qín | harmonica |
| 口试 | kǒu shì | oral examination; oral test |
| 口不应心 | kǒu bù yìng xīn | to say one thing but mean another; to dissimulate |
| 口干舌燥 | kǒu gān shé zào | lit. dry mouth and tongue (idiom); to talk too much |
| 口交 | kǒu jiāo | oral sex |
| 口传 | kǒu chuán | orally transmitted |
| 口北 | kǒu běi | north of the Great Wall |
| 口吐毒焰 | kǒu tǔ dú yàn | lit. a mouth spitting with poisonous flames; to speak angrily to sb (idiom) |
| 口吸盘 | kǒu xī pán | oral sucker (e.g. on blood-sucking parasite) |
| 口哨 | kǒu shào | whistle |
| 口感 | kǒu gǎn | taste; texture (of food); how food feels in the mouth |
| 口才 | kǒu cái | eloquence |
| 口技表演者 | kǒu jì biǎo yǎn zhě | ventriloquist |
| 口是心非 | kǒu shì xīn fēi | lit. mouth says yes, heart no (idiom); duplicity; empty words |
| 口沫 | kǒu mò | spittle; saliva |
| 口淫 | kǒu yín | oral sex; fellatio |
| 口湖 | Kǒu hú | Kouhu township in Yunlin county 云林县, Taiwan |
| 口湖乡 | Kǒu hú xiāng | Kouhu township in Yunlin county 云林县, Taiwan |
