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口

Tap the pinyin to hear it

mouth; classifier for things with mouths (people, domestic animals, cannons, wells etc); classifier for bites or mouthfuls

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HSK 3.0
Level 1
Old HSK
Level 3
Strokes
3
Radical
口 itself
Structure
Top–bottom 上下
Traditional
口
Common rank
#62
Unicode
U+53E3

Sound it out + =

Formation & memory

Break the character into parts you already know.

How 口 is formed

Pictograph (象形字)

An open mouth

Components 冂 一

How to remember it

mouth · Heisig RSH #11

Keyword method from Heisig's Remembering Simplified Hanzi.

Words with 口

The most common words first — learning a character in context makes it stick.

WordPinyinMeaning
门口 mén kǒu doorway; gate; CL:個|个[ge4]
路口 lù kǒu crossing; intersection (of roads)
心口不一 xīn kǒu bù yī heart and mouth at variance (idiom); keeping one's real intentions to oneself; saying one …
人口学 rén kǒu xué demography
口子 kǒu zi hole; opening; cut; gap; gash; my husband or wife; classifier for people (used for indicat…
有口无心 yǒu kǒu wú xīn to speak harshly but without any bad intent (idiom)
人口 rén kǒu population; people
大口 dà kǒu large mouth; in large bites, mouthfuls or gulps
一口气儿 yī kǒu qì r erhua variant of 一口氣|一口气[yi1 kou3 qi4]
海口市 Hǎi kǒu Shì Haikou, prefecture-level city and capital of Hainan Province 海南省[Hai3 nan2 Sheng3]
一口 yī kǒu readily; flatly (deny, admit and so on); a mouthful; a bite
山口 Shān kǒu Yamaguchi (Japanese surname, prefecture, and city)
山口 shān kǒu mountain pass
口水 kǒu shuǐ saliva
口头 kǒu tóu oral; verbal
一口气 yī kǒu qì one breath; in one breath; at a stretch
心口 xīn kǒu pit of the stomach; solar plexus; words and thoughts
出水口 chū shuǐ kǒu water outlet; drainage outlet
开口子 kāi kǒu zi a dike breaks; fig. to provide facilities (for evil deeds); to open the floodgates
阿拉山口市 Ā lā shān kǒu Shì Alashankou, a county-level city in Bortala Mongol Autonomous Prefecture 博爾塔拉蒙古自治州|博尔塔拉蒙古自治…

Sound family

These characters use 口 as their sound component — compare how they read.

CharacterPinyinMeaning
口 sound part kǒu mouth; entrance, gate, opening
可 kě may, can, -able; possibly
扣 kòu to detain; to knock, to tap; button
否 fǒu no, not, un-; final particle
叩 kòu to ask; to bow, to kowtow; to knock