一
one · one radical (no.1)
Details
Description
One - a single horizontal stroke. The beginning, unity, and the Japanese sense of a once-only moment.
Stroke Order
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
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
一家に遊女もねたり萩と月
Under one roof, courtesans asleep as well — bush clover and the moon.
痩蛙まけるな一茶是に有り
Thin frog, do not lose — Issa is here beside you.
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.
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
A well-known work with 一 in its Japanese title.
はじめの一歩 THE FIGHTING!
Hajime no Ippo: The Fighting!
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
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
A well-known work with 一 in its Japanese title.
一週間フレンズ。
One Week Friends
A well-known work with 一 in its Japanese title.
Related Figures & Stories
小林一茶
Name contains 一
Kobayashi Issa was a Japanese poet. He is known for his haiku poems and journals.
Wikipedia樋口一葉
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
Name contains 一
Emperor Ichijō was the 66th emperor of Japan, according to the traditional order of succession.
Wikipedia寺内寿一
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.
WikipediaOther 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