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一

On'yomi
イチ・イツ
ICHI / ITSU
Kun'yomi
ひと-・ひと.つ
hito / hitotsu

one · one radical (no.1)

Details

Strokes1
Frequency#2
Radical一one(1)

Description

One - a single horizontal stroke. The beginning, unity, and the Japanese sense of a once-only moment.

Stroke Order

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Strokes1

Cultural Context

Etymology

Simple horizontal stroke representing 'one'. The most fundamental number.

Symbolism

Beginning, unity, uniqueness. Represents precious moments in life as in 'ichigo ichie'.

Related Culture & Scenes

  • — Building wealth

Words & Expressions

Words written with 一

一切いっさいall
一定いっていfix
一品いっぴんitem
唯一ゆいいつonly
一方いっぽうother

Four-Character Compounds

一意専心

いちいせんしん

single-mindedly; wholeheartedly; with all one's heart

一衣帯水

いちいたいすい

(being separated only by a) narrow strip of water; narrow strait (channel, river)

一家団欒

いっかだんらん

happy family get-together

一喜一憂

いっきいちゆう

alternating between happiness and anxiety; swinging between joy and sorrow; being glad and sad by turns

一期一会

いちごいちえ

once-in-a-lifetime encounter; uniquely precious experience; one lifetime, one meeting

一気呵成

いっきかせい

finishing writing, work, etc. at a stroke (stretch); knocking something off without a break

一騎当千

いっきとうせん

being a match for a thousand; being a mighty warrior (combatant, player)

一挙一動

いっきょいちどう

one's every action; every single move

一挙両得

いっきょりょうとく

killing two birds with one stone; serving two ends

一言一行

いちげんいっこう

every word and act; just a word or an act

一言居士

いちげんこじ

person who is ready to comment on every subject; ready critic

一刻千金

いっこくせんきん

every moment is precious; time is money; precious time

一子相伝

いっしそうでん

transmission of the secrets of an art, craft, trade or learning from father to only one child

一死報国

いっしほうこく

dying for one's country

一紙半銭

いっしはんせん

small sum; things of little value

一視同仁

いっしどうじん

loving every human being with impartiality; universal brotherhood; universal benevolence

一字千金

いちじせんきん

word of great value

一汁一菜

いちじゅういっさい

one-plate meal; simple meal; austerity diet

一宿一飯

いっしゅくいっぱん

(being beholden to someone for a favor of) a night's lodging and a meal

一所懸命

いっしょけんめい

very hard; with utmost effort; as hard as one can

一触即発

いっしょくそくはつ

critical (touch and go) situation; explosive situation

一心同体

いっしんどうたい

being one in body and soul; of one flesh; two hearts beating as one

一心不乱

いっしんふらん

wholeheartedly; with heart and soul; intently

一新紀元

いっしんきげん

new era; new age

一進一退

いっしんいったい

now advancing and now retreating; ebb and flow; seesawing

一生懸命

いっしょうけんめい

very hard; with utmost effort; as hard as one can

一石二鳥

いっせきにちょう

killing two birds with one stone

一切衆生

いっさいしゅじょう

all living creatures

一知半解

いっちはんかい

superficial knowledge; half knowledge

一張一弛

いっちょういっし

tension and relaxation

一朝一夕

いっちょういっせき

in a day; in a brief space of time

一長一短

いっちょういったん

(something having its) merits and demerits; advantages and disadvantages; good points and shortcomings

一天四海

いってんしかい

the world; the universe

一天万乗

いってんばんじょう

the whole realm

一刀両断

いっとうりょうだん

cutting in two with a single stroke; taking decisive action; dealing with decisively

一得一失

いっとくいっしつ

gaining some and losing some; (something having its) advantages and disadvantages

一日片時

いちにちへんじ

short time

一念発起

いちねんほっき

being resolved to (do something); having a wholehearted intention

一夫一婦

いっぷいっぷ

monogamy

一夫多妻

いっぷたさい

polygamy; polygyny

一部始終

いちぶしじゅう

full particulars; all the details; the whole story

一分一厘

いちぶいちりん

(not even) a bit of; (not even) a hint of; (not) an iota of

一方通行

いっぽうつうこう

one-way traffic; one-way (e.g. communication); one-sided

一望千里

いちぼうせんり

sweeping view of the eye; boundless expanse

一本調子

いっぽんぢょうし

monotone; monotonous; dull

一枚看板

いちまいかんばん

leading player; prima donna; box-office star

一網打尽

いちもうだじん

round-up (e.g. of criminals); wholesale arrest; catching the whole herd with one throw

一目瞭然

いちもくりょうぜん

obvious; (as) clear as day; plain to see

一問一答

いちもんいっとう

answering question by question

一利一害

いちりいちがい

advantages and disadvantages; gain some, lose some

一蓮托生

いちれんたくしょう

sharing one's lot with another; being in the same boat

一六勝負

いちろくしょうぶ

gambling on whether the throw of a die will produce a "one" or a "six"; gambling with dice; gambling

一瀉千里

いっしゃせんり

one swift effort; rush through one's work; fast-talking, writing, etc.

一顰一笑

いっぴんいっしょう

one's mood; one's caprice; a smile or a frown

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

乾坤一擲

けんこんいってき

stake all (on something); play for all or nothing; throwing all into a task

危機一髪

ききいっぱつ

by a hair's breadth; in the nick of time; touch and go

緊褌一番

きんこんいちばん

gird oneself up

九牛一毛

きゅうぎゅうのいちもう

small fraction (of); drop in the bucket; drop in the ocean

九死一生

きゅうしいっしょう

narrow escape from the jaw of death

言行一致

げんこういっち

acting up to one's words; consistency between speech and action

三位一体

さんみいったい

the Trinity; three parts; three components

十年一日

じゅうねんいちじつ

without intermission for ten (long) years; with constancy of purpose for ten (long) years; in the same old rut for years on end

真一文字

まいちもんじ

straight line; beeline

真実一路

しんじついちろ

path of sincerity

尋常一様

じんじょういちよう

ordinary; common; mediocre

千載一遇

せんざいいちぐう

once-in-a-lifetime (opportunity); golden (opportunity); one-in-a-million (chance)

天下一品

てんかいっぴん

beyond compare; peerless; unrivaled

二者選一

にしゃせんいつ

choosing between two things; two choices

二者択一

にしゃたくいつ

choosing between two things; two choices

八紘一宇

はっこういちう

universal brotherhood; all eight corners of the world under one roof

表裏一体

ひょうりいったい

the two views (of an object) referring to the same thing; being inseparable like the two sides of an object; two sides of the same coin

万世一系

ばんせいいっけい

unbroken imperial line

満場一致

まんじょういっち

unanimity; unanimous consent; unanimous agreement

唯一無二

ゆいいつむに

one and only; unique

一言半句

いちげんはんく

a single word; (not even) a word; (not even) a syllable

一世一代

いっせいちだい

once in a lifetime; the first and last occurrence (event, experience) of one's lifetime

一日千秋

いちじつせんしゅう

(waiting) impatiently; (spending) many a weary day; each moment seeming like an eternity

一攫千金

いっかくせんきん

getting rich quick; making a killing; making a fortune at a single stroke

一切合切

いっさいがっさい

any and every thing; altogether; lock, stock, and barrel

千編一律

せんぺんいちりつ

monotonous; humdrum; stereotyped

渾然一体

こんぜんいったい

in complete harmony

破顔一笑

はがんいっしょう

smiling broadly

挙国一致

きょこくいっち

national unity; unity of the whole nation

首尾一貫

しゅびいっかん

consistent; unchanging from beginning to end

終始一貫

しゅうしいっかん

consistently; unchangingly; throughout

衆議一決

しゅうぎいっけつ

deciding unanimously or by consensus

一字一句

いちじいっく

word for word; verbatim; literally

一言一句

いちごんいっく

every single word and phrase; word by word

一病息災

いちびょうそくさい

one who experiences a chronic ailment takes better care of his health and lives longer

一陽来復

いちようらいふく

return of spring; long-awaited, favorable turn of fortune (favourable)

政教一致

せいきょういっち

unity of church and state

十年一昔

じゅうねんひとむかし

the pace of change makes ten years back seem like ancient history

言文一致

げんぶんいっち

unification of the written and spoken forms of a language

霊肉一致

れいにくいっち

unity of body and spirit

祭政一致

さいせいいっち

unity of church and state; theocracy

心機一転

しんきいってん

changing one's attitude; turning over a new leaf; getting a fresh start

一致団結

いっちだんけつ

solidarity; banding together and working as one for a common cause

一所不住

いっしょふじゅう

vagrant; transient lifestyle

一家眷属

いっかけんぞく

one's family, relations, and followers

一虚一実

いっきょいちじつ

constantly changing phase and being highly unpredictable

一件落着

いっけんらくちゃく

an issue being settled; a case being closed

一族郎党

いちぞくろうとう

one's family and followers; one's whole clan

一諾千金

いちだくせんきん

one's word is worth 1,000 pieces of gold; a promise should be kept at all cost

一日三秋

いちじつさんしゅう

(waiting) impatiently; (spending) many a weary day; each moment seeming like an eternity

一罰百戒

いちばつひゃっかい

punishing a crime to make an example for others

一味徒党

いちみととう

whole party to a plot; whole gang; fellow conspirators

一路順風

いちろじゅんぷう

sailing before the wind; everything is going well

一路平安

いちろへいあん

(wishing someone) bon voyage

鎧袖一触

がいしゅういっしょく

(beating someone) hands down; with a single blow

頑固一徹

がんこいってつ

stubborn; obstinate; adamant

春宵一刻

しゅんしょういっこく

a moment of time in a spring evening (is worth a thousand pieces of gold)

人心一新

じんしんいっしん

complete change in public sentiment; leading the thought of the people to an entirely different channel

精神一到

せいしんいっとう

concentration of mind; mental concentration (on some task)

精神統一

せいしんとういつ

concentration of mind; mental concentration (on some task)

台風一過

たいふういっか

clear weather after a typhoon has passed

大喝一声

だいかついっせい

shouting in a thunderous voice; blustering out

知行合一

ちこうごういつ

awareness comes only through practice

当代随一

とうだいずいいち

the greatest of the day

万死一生

ばんしいっしょう

advancing in the face of death; having a narrow escape from the jaw of death

万緑一紅

ばんりょくいっこう

one red flower standing out in a sea of green vegetation; one item of quality standing out among many; one woman among many men

面目一新

めんもくいっしん

undergoing a complete change in appearance; changing something out of all recognition; a rise in one's reputation

心身一如

しんしんいちにょ

body and mind as one; mind-body unity

千慮一失

せんりょいっしつ

mere slip by someone who is usually very careful; simple mistake by a wise person; point overlooked by a cautious person

千慮一得

せんりょいっとく

even a fool may sometimes come up with a good idea

大死一番

だいしいちばん

exerting oneself to the utmost, prepared to die if necessary

一芸一能

いちげいいちのう

(excelling in) one area or skill; (being skilled or gifted in) one certain area

一伍一什

いちごいちじゅう

full particulars; the whole story; from beginning to end

一語一句

いちごいっく

every single word and phrase; each and every word

一上一下

いちじょういちげ

going up and down

一大決心

いちだいけっしん

momentous (crucial) decision

一読三嘆

いちどくさんたん

a reading leaves one with ceaseless sighs of admiration

一人当千

いちにんとうせん

being a match for a thousand

一木一草

いちぼくいっそう

a single tree or blade of grass; every stick and stone (of a place)

一味同心

いちみどうしん

(people) working together with one mind

一国一城

いっこくいちじょう

(possession of) one feudal domain and one castle; being independent (acting without compromise or assistance); establishing only one castle in each feudal domain (edict issued by the shogunate in 1615)

一唱三嘆

いっしょうさんたん

one reading (of a poem aloud) leaves one with ceaseless sighs of admiration

一笑千金

いっしょうせんきん

a smile of a beautiful woman is worth a thousand pieces of gold; enchanting smile of a glamorous woman

一生不犯

いっしょうふぼん

(strict) observance of the Buddhist precept of lifelong celibacy

一世風靡

いっせいふうび

ruling the times; holding sway over the minds of the people

一殺多生

いっさつたしょう

it is justifiable to kill one person to save the lives of many

一旦緩急

いったんかんきゅう

(when) danger threatens; should an emergency occur

一点一画

いってんいっかく

the dots of i's and the crosses of t's; (not neglecting) the slightest details

一発必中

いっぱつひっちゅう

success on the first try (attempt)

一筆啓上

いっぴつけいじょう

this will just be a short note; I'm writing to tell you

義理一遍

ぎりいっぺん

perfunctory; going-through-the-motions-sort of (invitation, gift, etc.)

槿花一日

きんかいちじつ

evanescent glory; passing prosperity

槿花一朝

きんかいっちょう

evanescent glory; passing prosperity

愚者一得

ぐしゃいっとく

even a fool may sometimes give good counsel

形影一如

けいえいいちにょ

being inseparable as a form and its shadow; a person's deed mirrors the good or evil of his mind; husband and wife being never apart

紫電一閃

しでんいっせん

flash of lightning; flash of a sword; brandishing a sword

純一無雑

じゅんいつむざつ

pure and unadulterated; pure in heart; simplehearted

専心一意

せんしんいちい

single-mindedly; wholeheartedly; with one's heart and soul

寵愛一身

ちょうあいいっしん

standing highest in one's master's favor; monopolizing the affection (favor) of the lord; being the lord's favorite lady

奮起一番

ふんきいちばん

bracing oneself up to action, being inspired by something; getting down to work, putting heart and soul into it; tackling (a job) with gusto

唯一不二

ゆいいつふじ

one and only; unique

励声一番

れいせいいちばん

giving cries of encouragement at a critical moment

一世一元

いっせいいちげん

the practice of assigning one era name to one emperor

一粒万倍

いちりゅうまんばい

a single seed can eventually produce a great harvest; even the smallest beginning can generate a greatest profit; watch the pennies, and the pounds will look after themselves

一暴十寒

いちばくじっかん

bursts of exertion will fail to bear fruit if interrupted by long periods of idleness; strenuous efforts, unless sustained, are to no avail

一目十行

いちもくじゅうぎょう

outstanding reading ability; one glance, ten lines

一文不通

いちもんふつう

total illiteracy

一切皆空

いっさいかいくう

matter is void; all is vanity

一擲千金

いってきせんきん

being lavish with one's money; spending a huge sum of money at once on a treat

十死一生

じっしいっしょう

narrow escape from the jaws of death; there being barely a chance of escaping death

一文半銭

いちもんきなか

meagre sum of money

黄粱一炊

こうりょういっすい

fleeting nature of riches and honour (honor)

衆口一致

しゅうこういっち

speaking with one voice; being unanimous

一強多弱

いっきょうたじゃく

one strong, many weak

一虚一盈

いっきょいちえい

constantly changing phase and being highly unpredictable

一顧傾城

いっこけいせい

woman so glamorous as to bring ruin to a country (castle) as its king (lord) is captivated by her beauty; femme fatale

貧者一灯

ひんじゃのいっとう

one's mite; widow's mite; one lantern from a poor man (i.e. no-one can give more than the only thing they have)

打成一片

たじょういっぺん

intensive zazen meditation on a subject; knocking all into one

一行三昧

いちぎょうざんまい

complete concentration on one subject (usu. prayer); one-practice absorption

一球入魂

いっきゅうにゅうこん

putting one's heart and soul into each pitch

一栄一落

いちえいいちらく

rise and fall

一億一心

いちおくいっしん

national unity (esp. during wartime)

一強皆弱

いっきょうかいじゃく

one strong, everyone else weak

Proverbs & Idioms

一寸先は闇

いっすんさきはやみ

An inch ahead is darkness

The future is completely unpredictable

Poetry

俳句 (Haiku)

一家に遊女もねたり萩と月

Under one roof, courtesans asleep as well — bush clover and the moon.

松尾芭蕉Matsuo Basho
1689
俳句 (Haiku)

痩蛙まけるな一茶是に有り

Thin frog, do not lose — Issa is here beside you.

小林一茶Kobayashi Issa
1816
俳句 (Haiku)

雪とけて村一ぱいの子ども哉

The snow melts, and the village fills to the brim with children.

小林一茶Kobayashi Issa
1814

Anime & Manga

劇場版「鬼滅の刃」無限城編 第一章 猗窩座再来

Demon Slayer: Kimetsu no Yaiba Infinity Castle

Anime

A well-known work with 一 in its Japanese title.

はじめの一歩 THE FIGHTING!

Hajime no Ippo: The Fighting!

Anime

A well-known work with 一 in its Japanese title.

寿命を買い取ってもらった。一年につき、一万円で。

Three Days of Happiness

Manga

A well-known work with 一 in its Japanese title.

一瞬で治療していたのに役立たずと追放された天才治癒師、闇ヒーラーとして楽しく生きる

The Brilliant Healer's New Life in the Shadows

Anime

A well-known work with 一 in its Japanese title.

一週間フレンズ。

One Week Friends

Anime

A well-known work with 一 in its Japanese title.

Related Figures & Stories

小林一茶

Kobayashi Issa1763–1828

Name contains 一

Kobayashi Issa was a Japanese poet. He is known for his haiku poems and journals.

Wikipedia

樋口一葉

Ichiyō Higuchi1872–1896

Name contains 一

Natsuko Higuchi , known by her pen name Higuchi Ichiyō , was a Japanese writer during the Meiji era.

Wikipedia

一条天皇

Ichijō980–1011

Name contains 一

Emperor Ichijō was the 66th emperor of Japan, according to the traditional order of succession.

Wikipedia

寺内寿一

Hisaichi Terauchi1879–1946

Name contains 一

Count Hisaichi Terauchi was a Gensui in the Imperial Japanese Army, commander of the Southern Expeditionary Army Group during World War II.

Wikipedia

Other kanji with the same meaning

Frequently Asked Questions

What does 一 mean in Japanese?

一 means one, one radical (no.1). One - a single horizontal stroke. The beginning, unity, and the Japanese sense of a once-only moment.

How do you read 一?

On'yomi: イチ、イツ (ICHI, ITSU). Kun'yomi: ひと-、ひと.つ (hito, hitotsu).

How many strokes does 一 have?

一 has 1 strokes. Its radical is 一 (one).

Is 一 a good kanji for a tattoo?

一 is one of the kanji most often chosen for tattoos. It means one, one radical (no.1). Read the full meaning and cultural background on this page first — some popular choices are deliberately dark.

Explore by meaning:one