| 口 | くち | mouth; opening; hole; gap | n5 |
| 入口 | いりぐち | entrance; entry; gate; approach | n4 |
| 人口 | じんこう | population; common talk | n4 |
| 口惜しい | くやしい | frustrated (over a failure, humiliation or injustice); annoyed; chagrined; (bitterly) disappointed | n3 |
| 口コミ | くちコミ | word of mouth; comments written online (about a product, service, etc.); online reviews | n1 |
| 口調 | くちょう | tone (of voice); manner of talking | |
| 悪口 | わるぐち | (verbal) abuse; speaking ill of people; bad-mouthing; name-calling | n2 |
| 惡口 | わるぐち | (verbal) abuse; speaking ill of people; bad-mouthing; name-calling | |
| 窓口 | まどぐち | counter; window; teller window; ticket window | n3 |
| 戸口 | とぐち | door; doorway | |
| 出口 | でぐち | exit; way out; outlet; vent | n5 |
| 裏口 | うらぐち | backdoor; rear entrance; rear exit; unauthorized | n1 |
| 口実 | こうじつ | excuse; pretext | n1 |
| 山口 | やまぐち | Yamaguchi (city, prefecture) | |
| 閉口 | へいこう | to be stumped; to be at a loss; to be at one's wits' end; to be nonplussed | n1 |
| 門口 | かどぐち | door; entrance; gateway | |
| 一口 | ひとくち | mouthful; morsel; bite; gulp | n2 |
| 利口 | りこう | clever; intelligent; bright; smart | n2 |
| 口々 | くちぐち | every person; every mouth; every entrance | |
| 口笛 | くちぶえ | whistle (sound made with the lips) | n1 |
| 口座 | こうざ | account (e.g. bank) | n2 |
| 口上 | こうじょう | speech; address; verbal message; (formal) greeting | n4 |
| 無口 | むくち | taciturn; reticent; quiet; silent | n2 |
| 口説く | くどく | to persuade; to urge; to coax; to solicit | |
| 口癖 | くちぐせ | pet saying; favorite phrase; stock phrase; catchphrase | n1 |
| 口元 | くちもと | mouth; lips; shape of the mouth; near an entrance | |
| 入り口 | いりぐち | entrance; entry; gate; approach | n4 |
| 早口 | はやくち | fast-talking; rapid talking | n2 |
| 口走る | くちばしる | to blurt out; to let slip; to say inadvertently; to come out with (e.g. nonsense) | |
| 傷口 | きずぐち | (opening of a) wound; cut | |
| 袖口 | そでぐち | cuff; armhole | |
| 告げ口 | つげぐち | telling (on someone); tattling; snitching | |
| 口吻 | こうふん | way of speaking; intimation; lips; mouth | n2 |
| 勝手口 | かってぐち | kitchen door; back door; service door; tradesman's entrance | |
| 山口県 | やまぐちけん | Yamaguchi Prefecture (Chūgoku area) | |
| 山口縣 | やまぐちけん | Yamaguchi Prefecture (Chūgoku area) | |
| 大口 | おおぐち | big mouth; mouth opened wide; boastful speech; tall talk | n1 |
| 川口 | かこう | mouth of river; estuary | n1 |
| 手口 | てぐち | modus operandi; criminal technique; trick | |
| 口論 | こうろん | quarrel; argument; row; (verbal) dispute | |
| 口ぶり | くちぶり | way of speaking; intimation | |
| 出入口 | でいりぐち | exit and entrance | n3 |
| 口唇 | こうしん | lips | n2 |
| 口数 | くちかず | number of words a person speaks; number of dependents; number of mouths to feed; number of shares, items, applications, etc. | n1 |
| 河口 | かこう | mouth of river; estuary | n1 |
| 口先 | くちさき | lip service; mere words; professions; lips | |
| 口頭 | こうとう | oral; verbal; spoken; parol | n1 |
| 口ずさむ | くちずさむ | to hum (a tune); to sing to oneself; to croon | |
| 口もと | くちもと | mouth; lips; shape of the mouth; near an entrance | |
| 口ごもる | くちごもる | to hesitate to say; to mumble; to hem and haw; to falter | |
| 無駄口 | むだぐち | chatter; idle talk | |
| 間口 | まぐち | frontage; width (of a building, plot of land, etc.); breadth (e.g. of one's knowledge); scope (e.g. of one's work) | |
| 猪口 | ちょこ | sake cup; small deep porcelain bowl for serving food | |
| 口髭 | くちひげ | moustache; mustache | |
| 口語 | こうご | spoken language; colloquial speech; (modern) spoken Japanese; written style based on (modern) spoken Japanese | n1 |
| 口真似 | くちまね | mimicking someone's speech; imitating someone's way of speaking; mimicry | |
| 口紅 | くちべに | lipstick | |
| 宵の口 | よいのくち | nightfall; early evening | |
| 口外 | こうがい | revealing (information, a secret, etc.); disclosure; telling; letting out | n3 |
| 口中 | こうちゅう | interior of the mouth; oral cavity | n1 |
| 切り口 | きりくち | cut end; section; opening; slit | n1 |
| 口早 | くちばや | fast (talking); rapid; quick-tongued | |
| やり口 | やりくち | way (of doing); manner; method | |
| 火口 | ひぐち | burner; nozzle; origin of a fire | |
| 口腔 | こうこう | oral cavity; mouth | n5 |
| 表口 | おもてぐち | front door | |
| 鯉口 | こいぐち | opening of a scabbard; mouth of a sword sheath; style of shirt with carp-mouth shaped sleeves | |
| 口火 | くちび | fuse; pilot light; cause (of a war, argument, revolt, etc.); origin | |
| 異口同音 | いくどうおん | (saying) with one voice; unanimously; in chorus; in unison | |
| 小口 | こぐち | cut end; edge (of a page, etc.); small amount; small quantity | |
| 口止め | くちどめ | forbidding mentioning (something to others); imposing silence (on); ordering (someone) to keep quiet; muzzling (someone) | |
| 糸口 | いとぐち | beginning; start; first step; clue | n2 |
| 絲口 | いとぐち | beginning; start; first step; clue | n2 |
| 切口 | きりくち | cut end; section; opening; slit | n1 |
| 口絵 | くちえ | illustration appearing in the first pages of a publication; frontispiece | |
| 口径 | こうけい | aperture; bore; calibre; caliber | n2 |
| 銃口 | じゅうこう | gun point; muzzle | n1 |
| 水口 | みずぐち | spout | |
| 口授 | くうじゅ | oral instruction or teaching or method | |
| 相談窓口 | そうだんまどぐち | inquiry counter; consulting service; assistance service | |
| 口出し | くちだし | meddling (in); butting in; interference; poking one's nose into | n1 |
| 陰口 | かげぐち | malicious gossip; backbiting; speaking ill behind someone's back | |
| 辛口 | からくち | dry taste (e.g. sake, wine); a liking for sake; one who likes sake; salty (taste) | |
| 口辺 | こうへん | around one's lips | |
| 木口 | きぐち | grade of wood; quality of wood; end grain; cut end | |
| 口やかましい | くちやかましい | nagging; critical; talkative; gossipy | n1 |
| 口碑 | こうひ | oral tradition; legend; folklore | |
| 口許 | くちもと | mouth; lips; shape of the mouth; near an entrance | |
| 噴火口 | ふんかこう | (volcanic) crater | |
| 軽口 | かるくち | talkative; loose-lipped; persiflage; frivolous talk | |
| 口伝 | くでん | oral instruction; passing information by word-of-mouth; oral tradition | |
| 口説 | くぜつ | lovers' tiff; quarrel between lovers; chattering; idle talk | |
| 庭口 | にわぐち | garden entrance | |
| 西口 | にしぐち | west entrance; west exit | |
| 出入り口 | でいりぐち | exit and entrance | n3 |
| 口振り | くちぶり | way of speaking; intimation | |
| 口説き | くどき | entreaty; imploring; begging; spoken portion of a song | |
| 口述 | こうじゅつ | dictation; verbal statement | |
| 口当たり | くちあたり | taste; feel on the tongue; manner; demeanour | |
| 口添え | くちぞえ | recommendation; putting in a good word for someone | |
| 口ぐせ | くちぐせ | pet saying; favorite phrase; stock phrase; catchphrase | n1 |
| 開口 | かいこう | opening; aperture (e.g. camera); opening one's mouth; beginning to speak | n1 |
| 口供 | こうきょう | affidavit; deposition | n3 |
| 口つき | くちつき | (in the shape of a) mouth; mouthpiece (of a cigarette); manner of speech | |
| 口汚い | くちぎたない | foul-mouthed; foul (language); abusive; greedy | |
| 東口 | ひがしぐち | east entrance; east exit | |
| 吸口 | すいくち | mouthpiece; cigarette holder; cigarette filter (tip); fragrant garnish (for soup) | |
| 口軽 | くちがる | loose-lipped; talkative | |
| 糊口 | ここう | bare livelihood; subsistence | n1 |
| 口角 | こうかく | corners of the mouth | |
| 甘口 | あまくち | sweet flavour; sweet flavor; mildness; flattery | |
| 口語形 | こうごけい | word form used in vernacular language (as opposed to classical language) | |
| 口車 | くちぐるま | cajolery; wheedling | |
| 秋口 | あきぐち | beginning of autumn; beginning of fall | |
| 南口 | みなみぐち | south entrance; south exit | |
| 肩口 | かたぐち | top of the shoulders; tip of the shoulder; collar | |
| 改札口 | かいさつぐち | ticket barrier; ticket gate; wicket | n3 |
| 口約束 | くちやくそく | verbal promise; one's word | |
| 虎口 | ここう | tiger's den; jaws of death; dangerous place | n1 |
| 冗談口 | じょうだんぐち | joke | |
| はけ口 | はけぐち | outlet (for water, gas, etc.); market (for goods); outlet; outlet (for one's feelings, energy, etc.) | n1 |
| 口まね | くちまね | mimicking someone's speech; imitating someone's way of speaking; mimicry | |
| 滝口 | たきぐち | top of a waterfall | |
| 口喧嘩 | くちげんか | quarrel; dispute; argument | |
| 地口 | じぐち | pun; play on words | |
| 蛇口 | じゃぐち | faucet; tap | |
| 悪口雑言 | あっこうぞうごん | all kinds of malicious gossip; heaping verbal abuse (on); cursing and swearing (words) | |
| 憎まれ口 | にくまれぐち | abusive language | |
| 口答え | くちごたえ | retort; back talk; backchat | |
| 開口部 | かいこうぶ | aperture | |
| 北口 | きたぐち | north entrance; north exit | |
| 口ぎたない | くちぎたない | foul-mouthed; foul (language); abusive; greedy | |
| ひと口 | ひとくち | mouthful; morsel; bite; gulp | n2 |
| 口部 | こうぶ | oral region; regio oralis; kanji radical for "mouth" | |
| 金口 | きんぐち | gold-colored paper wrapped around the tip of a cigarette (coloured) | |
| 鳶口 | とびぐち | fire hook; firefighter's hook | |
| 口幅ったい | くちはばったい | boastful; conceited; bragging; impudent | |
| 口内炎 | こうないえん | mouth ulcer; stomatitis | |
| 口臭 | こうしゅう | bad breath; halitosis | n2 |
| 口誦 | こうしょう | recitation | n2 |
| 口舌 | くぜつ | lovers' tiff; quarrel between lovers; chattering; idle talk | |
| 口さがない | くちさがない | gossipy; abusive; critical; jabbering | |
| 上がり口 | あがりくち | entrance | |
| 口前 | くちまえ | way of speaking; profession | |
| 勤め口 | つとめぐち | position; place of employment | |
| 差出口 | さしでぐち | uncalled-for remark; impertinent remark | |
| 遣り口 | やりくち | way (of doing); manner; method | |
| 経口 | けいこう | taken by mouth; passed into the body via the mouth; oral | n2 |
| 片口 | かたくち | lipped bowl; one side of a story or argument | |
| 受け口 | うけぐち | mouth with a protruding lower lip and jaw; socket; receiving window; slot | |
| 後口 | あとくち | aftertaste; later (in line or in turn, etc.) | |
| 口争い | くちあらそい | quarreling; quarrelling | |
| 玄関口 | げんかんぐち | entrance door; front door; gateway (to a region, etc.) | |
| 湾口 | わんこう | entrance to a bay; mouth of a bay | |
| 口移し | くちうつし | mouth-to-mouth feeding; beak-to-beak feeding; mouth-to-mouth (resuscitation); conveying by word of mouth | |
| 語り口 | かたりくち | way of reciting; way of telling a story | |
| 原口 | げんこう | blastopore | n2 |
| 口金 | くちがね | (metal) cap; clasp; mouthpiece; socket (for light, etc.) | |
| 歌口 | うたぐち | flute mouthpiece; poetic style | |
| 総人口 | そうじんこう | total population | |
| 掻き口説く | かきくどく | to plead; to urge; to pester; to beg | |
| 口書 | くちがき | writing with the brush in one's mouth; foreword; preface; affidavit | |
| 口きき | くちきき | mediation; good offices; intervention; mediator | |
| 口入れ | くちいれ | acting as go-between; good offices | |
| 口づけ | くちづけ | kiss | |
| 口演 | こうえん | oral presentation | n5 |
| 口銭 | こうせん | commission; brokerage | |
| 序ノ口 | じょのくち | (this is only) the beginning; just the start; jonokuchi; lowest division in sumo | |
| 排水口 | はいすいこう | drain; overflow | |
| 港口 | こうこう | harbor entrance; harbour entrance | n5 |
| 口うるさい | くちうるさい | nagging; faultfinding; carping; captious | |
| 口内 | こうない | oral; in the mouth | n1 |
| 口寄せ | くちよせ | summoning a spirit and giving them voice (esp. when done by a female shaman); channeling; female medium; female channeler | |
| 鰐口 | わにぐち | wide mouth; alligator; temple gong | |
| 口語体 | こうごたい | colloquial style; written style based on spoken language | |
| 猪口才 | ちょこざい | impertinent; impudent; saucy; cheeky | |
| 銀行口座 | ぎんこうこうざ | bank account | |
| 鶏口牛後 | けいこうぎゅうご | better to be the beak of a rooster than the rump of a bull; better to be the leader of a small group than a subordinate in a large organization; better to be a big fish in a little pond than a little fish in a big pond | |
| 別口 | べつくち | different kind; another sort; separate item; another approach | |
| 口利き | くちきき | mediation; good offices; intervention; mediator | |
| 蝦蟇口 | がまぐち | (coin) purse with a metal clasp | |
| 逃げ口上 | にげこうじょう | excuse; evasion; dodge; subterfuge | |
| 口腹 | こうふく | appetite; distinction between what is thought and what is said | n2 |
| 口裏 | くちうら | determining a speaker's true or hidden meaning; determining a speaker's intentions from his manner of speech; divining good or bad luck from listening to someone | |
| 口喧しい | くちやかましい | nagging; critical; talkative; gossipy | n1 |
| 口気 | こうき | bad breath; intimation | |
| 弁口 | べんこう | speech; manner of speaking | |
| 衆口 | しゅうこう | common talk; talk of the town; words of many people | |
| 口下手 | くちべた | inarticulate; clumsy with words; poor at speaking | |
| 口達者 | くちだっしゃ | eloquent; glib; talkative; fluent | |
| 登山口 | とざんぐち | starting point of a mountain ascent; trailhead (leading up a mountain) | |
| 減らず口 | へらずぐち | impudent talk; speaking without thinking; continuing talking even after one has lost an argument; (getting in) the last word | |
| 口取 | くちとり | leading a horse, cow, etc.; groom; horse boy; hors d'oeuvre | |
| 口重 | くちおも | slow of speech; prudent | |
| 落口 | おちぐち | crest (of a waterfall); mouth (of a sewer, etc.); outfall; spout (e.g. of a watering can) | |
| 序の口 | じょのくち | (this is only) the beginning; just the start; jonokuchi; lowest division in sumo | |
| 口三味線 | くちじゃみせん | humming a samisen tune; smooth talk; sweet words; cajolery | |
| 小利口 | こりこう | superficially clever; smart-alecky; shrewd | |
| 非常口 | ひじょうぐち | emergency exit | |
| 合口 | あいくち | chum; pal; dagger; stiletto | |
| 前口上 | まえこうじょう | introductory remarks | |
| 開口一番 | かいこういちばん | at the very beginning of one's speech; immediately upon opening one's mouth (to speak); before anything else; first of all | |
| 山口組 | やまぐちぐみ | Yamaguchi-gumi (yakuza syndicate) | |
| 口不調法 | くちぶちょうほう | inarticulate; clumsy with words; poor at speaking | |
| 攻め口 | せめくち | method of attack; place of attack | |
| 口切り | くちきり | start broaching (a subject); opening remark; start; commencement | |
| 売れ口 | うれくち | outlet; market (for goods); prospect (e.g. employment, marriage, etc.); opportunity | |
| 口ずから | くちずから | directly (from someone's mouth); in one's own words | |
| おちょぼ口 | おちょぼぐち | puckered-up mouth; button of a mouth | |
| 薄口 | うすくち | light (flavor); lightly seasoned; light soy sauce; thin (porcelain, ceramic, etc.) | |
| 儲け口 | もうけぐち | profitable job; way to make a fast buck | |
| お猪口 | おちょこ | sake cup | |
| 人口密度 | じんこうみつど | population density | |
| 口どけ | くちどけ | melt-in-the-mouth feeling | |
| 先口 | せんくち | previous preconception; previous engagement | |
| 口語表現 | こうごひょうげん | colloquial expression; colloquialism | |
| 口取り | くちとり | leading a horse, cow, etc.; groom; horse boy; hors d'oeuvre | |
| 逃げ口 | にげぐち | way of escape | |
| 口蓋 | こうがい | palate | n3 |
| 口承 | こうしょう | passing on by word of mouth; oral tradition | n2 |
| 口拍子 | くちびょうし | counting time orally | |
| 子宮口 | しきゅうこう | os uteri; cervical os; orifice of the uterus | |
| 捌け口 | はけぐち | outlet (for water, gas, etc.); market (for goods); outlet; outlet (for one's feelings, energy, etc.) | n1 |
| 徒口 | むだぐち | chatter; idle talk | |
| 焚口 | たきぐち | door (of a furnace, stove, etc.); fuel hole | |
| 口語文 | こうごぶん | colloquial writing; text written in a spoken form of the language | |
| 口答 | こうとう | oral answer | n2 |
| がま口 | がまぐち | (coin) purse with a metal clasp | |
| 口溶け | くちどけ | melt-in-the-mouth feeling | |
| 差し出口 | さしでぐち | uncalled-for remark; impertinent remark | |
| 呑口 | のみくち | taste (of a liquid, esp. alcoholic beverages); someone who enjoys alcohol; place one's lips touch on the rim of a cup; shape of one's mouth when drinking | |
| 濃口 | こいくち | rich (taste); dark-coloured; thick; heavy | |
| 口語訳 | こうごやく | colloquial translation | |
| 人口動態 | じんこうどうたい | changes in demographics; movements in population characteristics | |
| 坑口 | こうこう | pithead; minehead | n5 |
| 口約 | こうやく | verbal promise | |
| 人口減少 | じんこうげんしょう | depopulation; falling population; decrease in population; population decline | |
| 艙口 | そうこう | hatch; hatchway (ship) | n2 |
| 口渇 | こうかつ | thirst; dry mouth; -dipsia | |
| 湯口 | ゆぐち | hot-water tap; hot spring | |
| 一口大 | ひとくちだい | bite-size; bite-sized | |
| 仲人口 | なこうどぐち | matchmaker's story; saying nice things about a person | |
| 口ひげ | くちひげ | moustache; mustache | |
| 口直し | くちなおし | removing a bad taste; cleansing one's palate; palate cleanser; intermezzo | |
| 悪たれ口 | あくたれぐち | abuse; insult; slander; evil speaking | |
| 口々に | くちぐちに | each and every person (saying); one and all; unanimously; in unison | |
| 口伝え | くちづたえ | oral instruction; passing information by word-of-mouth; oral tradition | |
| 受口 | うけぐち | mouth with a protruding lower lip and jaw; socket; receiving window; slot | |
| 働き口 | はたらきぐち | position; job; employment; opening | |
| 口上手 | くちじょうず | being good at conversation; conversationalist; good talker; smooth-talker | |
| 火口湖 | かこうこ | crater lake | |
| 突破口 | とっぱこう | breakthrough (research, etc.); breach; opening | |
| 口ごたえ | くちごたえ | retort; back talk; backchat | |
| 手足口病 | てあしくちびょう | hand, foot and mouth disease; HFMD | |
| 巨口 | きょこう | big mouth | n1 |
| 小口切り | こぐちぎり | cutting into thin round slices; cutting across; slicing | |
| 濃い口 | こいくち | rich (taste); dark-coloured; thick; heavy | |
| 火口丘 | かこうきゅう | volcanic cone | |
| 世界人口 | せかいじんこう | world population; global population | |
| 両口 | りょうぐち | both openings; two people; couple | |
| 広口 | ひろくち | wide-mouthed (bottle, jar, etc.); shallow bowl for displaying arranged flowers | |
| とば口 | とばくち | entrance; threshold; beginning; first step | |
| 口まめ | くちまめ | talkative; voluble | |
| 口分田 | くぶんでん | allotted rice field (ritsuryō system); land distributed to all citizens from which yields were taxed by the government | |
| 口座振替 | こうざふりかえ | direct debit; account-to-account transfer | |
| 一口噺 | ひとくちばなし | joke; anecdote | |
| 昇降口 | しょうこうぐち | entrance; hatch(way) | |
| 石榴口 | ざくろぐち | low door used in bathhouses to prevent the hot water from cooling (Edo period) | |
| 山口大学 | やまぐちだいがく | Yamaguchi University | |
| 総合口座 | そうごうこうざ | savings account; deposit account | |
| 人口統計学 | じんこうとうけいがく | demography | |
| 藉口 | しゃこう | pretence; pretense | n1 |
| 中口 | なかぐち | central entrance; slander | |
| 赤口 | しゃっこう | day that is unlucky except between the auspicious hours of 11am and 1pm (in the traditional calendar) | |
| 切れ口 | きれくち | cut end; section; opening; slit | |
| 口べた | くちべた | inarticulate; clumsy with words; poor at speaking | |
| 口巧者 | くちごうしゃ | smooth-spoken | |
| 尿道口 | にょうどうこう | urethral opening; urinary meatus | |
| 折れ口 | おれくち | break; split | |
| 人口分布 | じんこうぶんぷ | population distribution | |
| 労働人口 | ろうどうじんこう | work force | |
| お利口さん | おりこうさん | well-behaved child; obedient child; good child | |
| 経口避妊薬 | けいこうひにんやく | oral contraceptives; the pill | |
| 口速 | くちばや | fast (talking); rapid; quick-tongued | |
| 口呼吸 | くちこきゅう | oral respiration; mouth breathing; breathing through one's mouth | |
| 合い口 | あいくち | chum; pal; dagger; stiletto | |
| 逃口上 | にげこうじょう | excuse; evasion; dodge; subterfuge | |
| 電話口 | でんわぐち | telephone receiver; telephone mouthpiece; making a telephone call; receiving a telephone call | |
| 口頭弁論 | こうとうべんろん | oral proceedings; oral pleadings | |
| 口頭試問 | こうとうしもん | oral examination; interview | |
| 経口投与 | けいこうとうよ | oral administration (of medicine) | |
| 餬口 | ここう | bare livelihood; subsistence | n1 |
| 八口 | やつくち | small opening in the side of some traditional Japanese clothing (located where the sleeve meets the bodice, below the armpit) | |
| ため口 | タメぐち | casual speech; peer language; informal language | |
| 乗車口 | じょうしゃぐち | entrance (for passengers at a train station); passenger door (on a train, bus, etc.) | |
| 取り口 | とりくち | technique; techniques | |
| 口八丁 | くちはっちょう | voluble; eloquent | |
| 口開け | くちあけ | opening (of a bottle); broaching; beginning; opening | |
| 就職口 | しゅうしょくぐち | position; opening; employment | |
| 身口意 | しんくい | action, speech and thought | |
| 人口問題 | じんこうもんだい | population problem | |
| 口座番号 | こうざばんごう | account number (bank, etc.) | |
| 経口感染 | けいこうかんせん | oral infection; orally transmitted infection | |
| 口説き落とす | くどきおとす | to persuade; to prevail upon; to win a woman's heart; to win over | |
| つげ口 | つげぐち | telling (on someone); tattling; snitching | |
| 口供書 | こうきょうしょ | affidavit; deposition | |
| 口言葉 | くちことば | spoken language; spoken words; language | |
| 通気口 | つうきこう | air vent | |
| 人口増加 | じんこうぞうか | increase in population; population growth | |
| 口げんか | くちげんか | quarrel; dispute; argument | |
| 特定口座 | とくていこうざ | specified account; designated account | |
| 薄口醤油 | うすくちしょうゆ | light soy sauce | |
| 閉口頓首 | へいこうとんしゅ | being at a complete loss as to what to do; being at one's wit's end; being at a loss for an answer | |
| 海口 | かいこう | harbor; entrance to a harbor; Haikou (China) | n1 |
| 口味 | こうみ | taste; flavor; flavour; deliciousness | |
| 口糧 | こうりょう | rations | |
| 上り口 | のぼりぐち | starting point for an ascent (mountain, stairs, etc.); base (of mountain, etc.) | |
| 中央口 | ちゅうおうぐち | central entrance; central exit | |
| 利口者 | りこうもの | clever person | |
| 口書き | くちがき | writing with the brush in one's mouth; foreword; preface; affidavit | |
| 口過ぎ | くちすぎ | making a living; means of living; livelihood | |
| 人口統計 | じんこうとうけい | population statistics; demographics | |
| 口あたり | くちあたり | taste; feel on the tongue; manner; demeanour | |
| 問い合わせ窓口 | といあわせまどぐち | inquiry desk; information counter | |
| 創口 | そうこう | opening of a wound; surgical incision | n2 |
| 兎口 | すぐち | harelip; cleft lip | |
| 口口 | くちぐち | every person; every mouth; every entrance | |
| 口子 | くちこ | dried sea-cucumber ovaries | |
| 蔭口 | かげぐち | malicious gossip; backbiting; speaking ill behind someone's back | |
| 飲口 | のみくち | taste (of a liquid, esp. alcoholic beverages); someone who enjoys alcohol; place one's lips touch on the rim of a cup; shape of one's mouth when drinking | |
| 一口話 | ひとくちばなし | joke; anecdote | |
| 口任せ | くちまかせ | random talk | |
| 口蓋化 | こうがいか | palatalization | |
| 口角炎 | こうかくえん | angular cheilitis; angular cheilosis | |
| ざくろ口 | ざくろぐち | low door used in bathhouses to prevent the hot water from cooling (Edo period) | |
| へな猪口 | へなちょこ | novice; greenhorn; squirt; worthless person | |
| 口止め料 | くちどめりょう | hush money | |
| 口頭伝承 | こうとうでんしょう | (passing down of) oral tradition; oral transmission | |
| 小口現金 | こぐちげんきん | petty cash | |
| 口縁 | こうえん | rim of bowl or vessel; peristome | n5 |
| 緘口 | かんこう | keeping silent; silence; restraining (speech); gagging | n3 |
| 鶏口 | けいこう | mouth of a chicken; leader of a small group | n2 |
| 口振 | こうふり | direct debit; account-to-account transfer | |
| タメ口 | タメぐち | casual speech; peer language; informal language | |
| 人口減 | じんこうげん | population decrease | |
| 口上書 | こうじょうしょ | verbal note (notes verbale); written statement | |
| 口煩い | くちうるさい | nagging; faultfinding; carping; captious | |
| 排気口 | はいきこう | vent; exhaust opening; exhaust port | |
| 換気口 | かんきこう | vent; ventilation opening | |
| 汲取口 | くみとりぐち | hole for pumping out a cesspool | |
| 箝口令 | かんこうれい | gag order; gag rule; gag law | |
| 送話口 | そうわぐち | (telephone) mouthpiece | |
| 開口率 | かいこうりつ | aperture ratio | |
| 口減らし | くちべらし | reducing the number of mouths one needs to feed (esp. by giving up children for adoption, apprenticeship, etc.) | |
| 初口 | しょくち | beginning | |
| 口琴 | こうきん | mouth harp; Jew's harp | |
| 口輪 | くちわ | muzzle | |
| 蟇口 | がまぐち | (coin) purse with a metal clasp | |
| お利口 | おりこう | well-behaved (esp. of children and pets); obedient; good | |
| 口写し | くちうつし | repeat mindlessly; speaking in a similar manner | |
| 口唇期 | こうしんき | oral phase; oral stage | |
| 口固め | くちがため | verbal promise; forbidding someone from telling others | |
| 口角泡 | こうかくあわ | frothing at the mouth | |
| 搬入口 | はんにゅうぐち | service entrance; delivery entrance | |
| 柘榴口 | ざくろぐち | low door used in bathhouses to prevent the hot water from cooling (Edo period) | |
| 脱出口 | だっしゅつこう | escape hatch; escape door | |
| 路地口 | ろじぐち | alley entrance | |
| 飲み口 | のみくち | taste (of a liquid, esp. alcoholic beverages); someone who enjoys alcohol; place one's lips touch on the rim of a cup; shape of one's mouth when drinking | |
| 鵞口瘡 | がこうそう | thrush (pediatric disease); aphtha; moniliasis | |
| 鼻口部 | びこうぶ | muzzle (of a dog, cat, etc.) | |
| 人口調査 | じんこうちょうさ | census | |
| 衆口一致 | しゅうこういっち | speaking with one voice; being unanimous | |
| 箝口 | かんこう | keeping silent; silence; restraining (speech); gagging | n3 |
| 口端 | くちは | gossip; corner of the mouth | |
| 膣口 | ちつこう | vaginal opening | |
| 諸口 | しょくち | sundries; miscellaneous (objects) | |
| むだ口 | むだぐち | chatter; idle talk | |
| 取水口 | しゅすいこう | intake port; water intake; sluice gate | |
| 口汚し | くちよごし | tantalizing sample (of food); tantalising sample (of food) | |
| 口蓋垂 | こうがいすい | uvula | |
| 口蓋裂 | こうがいれつ | cleft palate | |
| 口蓋骨 | こうがいこつ | palatine bone (of the skull) | |
| 口触り | くちざわり | (food that meets one's) taste; treatment | |
| 口頭語 | こうとうご | spoken language (as opposed to literary) | |
| 投入口 | とうにゅうぐち | insertion slot (e.g. coins, tickets); input port | |
| 正面口 | しょうめんぐち | main entrance; front entrance; main exit; front exit | |
| 洗口液 | せんこうえき | mouthwash | |
| 片口鰯 | かたくちいわし | Japanese anchovy (Engraulis japonica) | |
| 軟口蓋 | なんこうがい | soft palate | |
| 降り口 | おりぐち | top (of a flight of stairs); end (of a moving walkway); exit door (e.g. of a bus); steps down (from a bus, etc.) | |
| にじり口 | にじりぐち | small entrance to a tea ceremony room (through which guests enter on their knees) | |
| 口内性交 | こうないせいこう | oral sex; fellatio | |
| 口承文芸 | こうしょうぶんげい | oral literature; folklore | |
| 口述試験 | こうじゅつしけん | oral examination | |
| 命令口調 | めいれいくちょう | tone of command; authoritative tone; commanding tone | |
| 濃口醤油 | こいくちしょうゆ | dark soy sauce; regular soy sauce | |
| 窓口機関 | まどぐちきかん | contact organization | |
| 身八つ口 | みやつぐち | small opening in the side of some traditional Japanese clothing for women and children (e.g. kimono, yukata) (located where the sleeve meets the bodice, below the armpit) | |
| 預金口座 | よきんこうざ | bank account | |
| 山口県立大学 | やまぐちけんりつだいがく | Yamaguchi Prefectural University | |
| 口耳 | こうじ | mouth and ear | n4 |
| 悧口 | りこう | clever; intelligent; bright; smart | n2 |
| 口才 | こうざい | oratorical talent; eloquence; clever tongue; glibness | n1 |
| 取口 | とりくち | technique; techniques | |
| 口偏 | くちへん | kanji "mouth" radical at left (radical 30) | |
| 口受 | くじゅ | listening to someone talking | |
| 口寄 | くちよせ | summoning a spirit and giving them voice (esp. when done by a female shaman); channeling; female medium; female channeler | |
| 口脇 | くちわき | edges of the mouth | |
| 下り口 | おりぐち | top (of a flight of stairs); end (of a moving walkway); exit door (e.g. of a bus); steps down (from a bus, etc.) | |
| 口づて | くちづて | oral instruction; passing information by word-of-mouth; oral tradition | |
| 口入屋 | くちいれや | employment agency | |
| 口塞ぎ | くちふさぎ | prohibition of speaking; imposition of silence; tiny morsel | |
| 口径食 | こうけいしょく | vignetting | |
| 口忠実 | くちまめ | talkative; voluble | |
| 口抜き | くちぬき | corkscrew | |
| 吸気口 | きゅうきこう | air inlet; intake vent | |
| 差入口 | さしいれぐち | opening (e.g. in a mailbox); gap; slot | |
| 搭乗口 | とうじょうぐち | boarding gate (airport); aircraft door | |
| 茶道口 | さどうぐち | host's entrance to a tea-ceremony room | |
| 軽口話 | かるくちばなし | humorous story with a punch line | |
| 銀口魚 | あゆ | ayu (Plecoglossus altivelis); sweetfish | |
| 人口爆発 | じんこうばくはつ | population explosion | |
| 出口戦略 | でぐちせんりゃく | exit strategy | |
| 出口調査 | でぐちちょうさ | exit poll (in elections) | |
| 口承文学 | こうしょうぶんがく | oral literature; folk literature | |
| 口腔外科 | こうくうげか | dental surgery; oral surgery | |
| 口頭審理 | こうとうしんり | oral proceedings | |
| 大口顧客 | おおくちこきゃく | major customer; large customer | |
| 就業人口 | しゅうぎょうじんこう | work force | |
| 昼間人口 | ちゅうかんじんこう | daytime population | |
| 過剰人口 | かじょうじんこう | surplus population | |
| 労働力人口 | ろうどうりょくじんこう | labor force; labour force | |
| 口裏合わせ | くちうらあわせ | arranging beforehand to tell the same story; getting the stories straight; coordinating one's stories | |
| 歴史人口学 | れきしじんこうがく | historical demography | |
| 生口 | せいこう | prisoner of war (Yayoi period); slaves | n4 |
| 砲口 | ほうこう | muzzle (of a gun) | n4 |
| 口撃 | こうげき | verbal attack | n2 |
| 1口 | ひとくち | mouthful; morsel; bite; gulp | n2 |
| 口称 | くしょう | chanting the invocation to Amida Buddha | n1 |
| 課口 | かこう | men who were subject to taxes and forced labor (ritsuryō system) | n1 |
| 下口 | おりぐち | top (of a flight of stairs); end (of a moving walkway); exit door (e.g. of a bus); steps down (from a bus, etc.) | |
| 乗口 | のりぐち | entry door (to a vehicle); entrance; door for boarding (e.g. a bus); equipage for restraining and mounting horses | |
| 口占 | くちうら | determining a speaker's true or hidden meaning; determining a speaker's intentions from his manner of speech; divining good or bad luck from listening to someone | |
| 口紐 | くちひも | drawstring (e.g. on a bag) | |
| 口茶 | くちぢゃ | adding more tea; adding fresh leaves to used ones in a teapot | |
| 烏口 | からすぐち | ruling pen | |
| 疵口 | きずぐち | (opening of a) wound; cut | |
| 白口 | しろぐち | silver white croaker (Pennahia argentata); silver croaker; white croaker | |
| 躙口 | にじりぐち | small entrance to a tea ceremony room (through which guests enter on their knees) | |
| 乗り口 | のりぐち | entry door (to a vehicle); entrance; door for boarding (e.g. a bus); equipage for restraining and mounting horses | |
| 乗降口 | じょうこうぐち | passenger vehicle entrance and exit | |
| 入場口 | にゅうじょうぐち | admission gate; entrance gate; entrance | |
| 八つ口 | やつくち | small opening in the side of some traditional Japanese clothing (located where the sleeve meets the bodice, below the armpit) | |
| 前小口 | まえこぐち | fore edge (of a book) | |
| 口付け | くちづけ | kiss | |
| 口伝て | くちづて | oral instruction; passing information by word-of-mouth; oral tradition | |
| 口明け | くちあけ | opening (of a bottle); broaching; beginning; opening | |
| 口話法 | こうわほう | lipreading | |
| 口部分 | くちぶぶん | opening (e.g. of a bag); mouth area | |
| 吐水口 | とすいこう | spout (for water) | |
| 小口径 | しょうこうけい | small calibre; small caliber | |
| 挿入口 | そうにゅうぐち | insertion point; insertion slot; insertion opening | |
| 放水口 | ほうすいこう | waste-water port (of a dam, sewer, etc.); freeing port (on a ship); water hose outlet (for firefighting) | |
| 昇り口 | のぼりぐち | starting point for an ascent (mountain, stairs, etc.); base (of mountain, etc.) | |
| 河口港 | かこうこう | port at the mouth of a river | |
| 火口壁 | かこうへき | crater wall | |
| 点検口 | てんけんこう | access hole (usu. floor or ceiling trap); inspection hole | |
| 経口薬 | けいこうやく | oral medicine; oral medication | |
| 緘口令 | かんこうれい | gag order; gag rule; gag law | |
| 落ち口 | おちぐち | crest (of a waterfall); mouth (of a sewer, etc.); outfall; spout (e.g. of a watering can) | |
| 避難口 | ひなんぐち | evacuation door; escape hatch | |
| 開口期 | かいこうき | dilatation stage (of labour) | |
| 降車口 | こうしゃぐち | exit (for disembarking passengers) | |
| のぼり口 | のぼりぐち | starting point for an ascent (mountain, stairs, etc.); base (of mountain, etc.) | |
| アヒル口 | アヒルぐち | duck face; duck lips; facial expression where the lips are pursed and corners of the mouth raised | |
| 人口構成 | じんこうこうせい | population composition; population make-up | |
| 口上書き | こうじょうしょ | verbal note (notes verbale); written statement | |
| 口入れ屋 | くちいれや | employment agency | |
| 口腔性交 | こうくうせいこう | oral sex | |
| 口語文法 | こうごぶんぽう | colloquial grammar; grammar of modern spoken and written Japanese | |
| 序ノ口格 | じょのくちかく | referee officiating the lowest division | |
| 早口言葉 | はやくちことば | tongue twister | |
| 窓口販売 | まどぐちはんばい | over the counter sales (often of financial packages) | |
| 裏口入学 | うらぐちにゅうがく | backdoor admission to a school; backdoor entry to a school; buying one's way into school; bribing one's way into a school | |
| 人口増加率 | じんこうぞうかりつ | population growth rate | |
| 取り入れ口 | とりいれぐち | an intake | |
| 差し込み口 | さしこみぐち | plug; intake; slot | |
| 口炎 | こうえん | mouth ulcer; stomatitis | n5 |
| 黄口 | こうこう | greenhorn; youthfulness and lack of experience | n5 |
| 這入口 | いりぐち | entrance; entry; gate; approach | n4 |
| 秘口 | ひこう | vagina; pussy | n3 |
| 鉗口 | かんこう | keeping silent; silence; restraining (speech); gagging | n3 |
| 口装 | こうそう | muzzleloading | n2 |
| 口針 | こうしん | stylet | n2 |
| 口音 | こうおん | oral consonant (as opposed to nasal) | n2 |
| 速口 | はやくち | fast-talking; rapid talking | n2 |
| 湖口 | ここう | lake inlet | n1 |
| 口だし | くちだし | meddling (in); butting in; interference; poking one's nose into | n1 |
| 口ぶえ | くちぶえ | whistle (sound made with the lips) | n1 |
| 吐け口 | はけぐち | outlet (for water, gas, etc.); market (for goods); outlet; outlet (for one's feelings, energy, etc.) | n1 |