At the A1 level, you might not use '安静' (ansei) yourself, but you might see it in simple health contexts. Think of it as a very polite way to say 'rest' when someone is sick. It's like saying 'be quiet and sleep' to help your body get better. You will mostly see it as '安静に' (ansei ni), which means 'quietly' or 'restfully.' If you see this word on a sign in a hospital, it just means 'be quiet.' It's a combination of 'safe' and 'quiet.'
At the A2 level, you should recognize '安静' as the standard word for 'medical rest.' You might hear a doctor say '安静にしてください' (Please rest). This is different from 'yasumi' (holiday). If you have a cold and tell your teacher '安静にしています' (I am resting), they will understand that you are staying in bed to get better. It's an important word for basic daily survival if you ever need to visit a pharmacy or a clinic in Japan.
As a B1 learner, you should understand the nuance of '安静' compared to other types of rest. It implies a lack of physical movement and mental stimulation. You should be able to use phrases like '安静が必要' (rest is necessary) and understand compound terms like '絶対安静' (absolute bed rest). You should also know that it's a 'na-adjective' in some contexts, describing a 'quiet/stable' state. It's common in news reports about injuries or illness.
At the B2 level, you can use '安静' in more abstract or formal contexts. You might discuss '心身の安静' (peace of mind and body) or use it to describe a stable economic or social situation, though that's rarer than the medical use. You should be comfortable with the collocation '安静を保つ' (to maintain quiet/rest). You also understand the social expectation that 'ansei' means a total withdrawal from social and work duties for the sake of health.
At the C1 level, you understand the clinical and technical depths of '安静.' You might encounter it in legal or medical documents (e.g., '安静加療' - rest and medical treatment). You can distinguish the subtle differences between '安静' and '静粛' (shizuku - silence/solemnity). You also understand how the word is used in historical or literary contexts to describe a period of peace after a conflict. You use it accurately in professional medical or caregiving environments.
At the C2 level, '安静' is a tool for precise communication. You can discuss the physiological effects of '安静' on the autonomic nervous system or use it metaphorically in high-level literature to describe a profound, almost spiritual stillness. You are aware of the word's history and its kanji roots in classical Chinese philosophy. You can navigate complex medical consultations where various levels of 'ansei' are discussed as part of a treatment plan.

安静 en 30 secondes

  • 安静 (ansei) is the Japanese word for 'medical rest' or 'quietude,' essential for recovery from illness or injury.
  • It is commonly used as '安静にする' (ansei ni suru), meaning to rest or stay quiet as prescribed by a doctor.
  • The word combines kanji for 'peace' and 'quiet,' emphasizing a state of stillness for both body and mind.
  • Unlike 'yasumi' (break), 'ansei' implies a clinical necessity and is a key term in Japanese healthcare and social etiquette.

The Japanese word 安静 (ansei) is a cornerstone of health and wellness vocabulary in Japan. While its literal translation is 'quiet' or 'rest,' its usage is deeply rooted in the medical and recovery sectors. Unlike the casual word yasumi (break/holiday), ansei implies a state of physical and mental stillness required for healing. When a doctor tells you to practice ansei, they aren't just saying 'take it easy'; they are prescribing a period of non-activity to allow the body to recover from illness or injury.

Medical Context
In Japanese hospitals, you will frequently see the term 絶対安静 (zettai ansei), which translates to 'absolute bed rest.' This is the highest level of clinical rest where the patient is often forbidden from even leaving their bed to use the restroom.
Daily Life
Outside the hospital, it is used when someone has a fever or a bad cold. Using ansei suggests a level of seriousness that requires staying home and avoiding any strenuous mental or physical labor.

風邪を引いたので、今日は家で安静にしています。
(Kaze o hiita node, kyou wa ie de ansei ni shite imasu.)
I caught a cold, so I am resting quietly at home today.

The kanji composition is also telling: 安 (an) means 'peace' or 'safety,' and 静 (sei) means 'quiet' or 'stillness.' Together, they create a concept of 'peaceful stillness.' This is why the word carries a weight of tranquility. It is not just about stopping work; it is about achieving a state of physiological and psychological peace. In a high-pressure society like Japan, the prescription of ansei is a socially sanctioned way to step back from all obligations. If you tell your boss you are taking ansei, they understand that you are not to be disturbed by phone calls or emails, as your priority is total recovery.

手術の後はしばらく安静が必要です。
(Shujutsu no ato wa shibaraku ansei ga hitsuyou desu.)
After surgery, a period of rest is necessary.

Social Nuance
Using this word shows a high level of Japanese proficiency because it moves beyond the basic 'yasumu' (to rest/sleep) into the specific vocabulary of health maintenance.

Using 安静 (ansei) correctly requires understanding its grammatical role as a noun that often functions like a na-adjective or part of a verbal phrase. The most common structure is [Noun] + にする (ni suru), meaning 'to keep quiet' or 'to rest.'

Pattern 1: Ansei ni suru
This is the active form. 'Doctor's orders' usually take this form: Ansei ni shite kudasai (Please rest).

医者に一週間安静にするように言われました。
(Isha ni isshuukan ansei ni suru you ni iwaremashita.)
The doctor told me to rest for a week.

Pattern 2: Ansei o tamotsu
This is more formal, meaning 'to maintain quietude' or 'to keep still.' It is often found in written instructions or formal hospital signage.

In a broader sense, ansei can describe the state of an environment. While shizuka is the general word for 'quiet,' ansei implies a functional quietness intended for recovery or focus. If a nurse asks for ansei in a ward, they are asking for a lack of disturbance. You can also use it to describe your own state when you are avoiding excitement or stress. It is a very polite and mature way to decline invitations when you are feeling unwell.

心身の安静を保つことが大切です。
(Shinshin no ansei o tamotsu koto ga taisetsu desu.)
It is important to maintain peace of mind and body.

You will encounter 安静 (ansei) in several specific environments in Japan. Understanding these contexts helps you grasp its gravity.

1. Hospitals and Clinics
This is the primary domain. Nurses use it when checking on patients, and doctors use it in diagnoses. You will see signs in corridors saying '安静区域' (Ansei Kuiki - Quiet Zone).
2. Health-Related TV Shows
Japanese daytime television often features health segments. Experts will frequently advise viewers to 'ansei ni shite kudasai' during flu season or heatwaves.

「しばらくは安静が必要ですね」と医師が言った。
("Shibaraku wa ansei ga hitsuyou desu ne" to ishi ga itta.)
"You need to rest for a while," the doctor said.

Another interesting place you hear it is in sports news. When a famous athlete gets injured, the official press release will often state that they are '自宅で安静にしている' (resting at home). This conveys to the fans that the injury is being taken seriously and they are in the recovery phase. It is a word that commands respect for the healing process.

Many learners confuse 安静 (ansei) with other words for 'rest' or 'quiet.' Here are the pitfalls to avoid.

Mistake 1: Using it for 'Vacation'
You cannot use ansei to mean a holiday or a fun break. For that, use 休暇 (kyuuka) or 休み (yasumi). Ansei is strictly for recovery or clinical stillness.
Mistake 2: Confusing with 'Shizuka'
While shizuka means a lack of noise, ansei means a lack of activity. A library is shizuka, but a patient is ansei.

❌ 週末は安静にハワイへ行きます。
✅ 週末は休暇でハワイへ行きます。
(You don't go to Hawaii for 'ansei'; that's a vacation.)

Another mistake is using the wrong particle. It is almost always ansei ni suru. Using o (ansei o suru) is technically possible but sounds much less natural in spoken Japanese than the ni version. Finally, remember that ansei is a serious word. Don't use it to describe your cat sleeping unless you're being humorous or the cat is actually sick.

To truly master 安静 (ansei), you must see how it sits alongside its synonyms.

休憩 (Kyuukei)
A short break from work or study (e.g., a coffee break). It is temporary and doesn't imply illness.
休息 (Kyuushiki)
A more substantial rest, often for the mind or spirit. 'Rest and relaxation' fits here.
平穏 (Heion)
Peace and tranquility in a general, often societal or environmental sense. A 'peaceful life' is heion na seikatsu.

仕事の合間に休憩を取る。
(Take a break between work tasks.)

In summary, choose ansei when the goal is recovery. Choose kyuukei for a pause in activity. Choose shizuka for the absence of sound. Choose heion for a lack of conflict or chaos. By distinguishing these, your Japanese will sound much more natural and precise.

How Formal Is It?

Le savais-tu ?

The character 安 (an) depicts a woman (女) under a roof (宀), symbolizing safety and peace. The character 静 (sei) combines 'blue/green' (青) and 'struggle/dispute' (争), originally suggesting the quieting of a conflict.

Guide de prononciation

UK /æn.seɪ/
US /ɑːn.seɪ/
Flat (Heiban style in Japanese pitch accent). No particular syllable is stressed.
Rime avec
Bansei (late success) Kansei (completion) Sensei (teacher) Sansei (agreement) Tensei (nature/innate) Gensei (strictness) Rensei (training) Unsei (fortune)
Erreurs fréquentes
  • Pronouncing it as 'An-shei' (mixing up sei and shi).
  • Shortening the final vowel to 'An-se'.
  • Putting stress on the first syllable 'AN-sei'.
  • Pronouncing the 'n' too strongly like 'Annie'.
  • Mixing it up with 'Anzen' (safety).

Niveau de difficulté

Lecture 3/5

The kanji are N3/N2 level, but the word is common in daily life.

Écriture 4/5

The kanji '静' is slightly complex to write perfectly.

Expression orale 2/5

Pronunciation is easy and flat.

Écoute 2/5

Distinctive sound, unlikely to be confused with other words.

Quoi apprendre ensuite

Prérequis

休む (Yasumu) 静か (Shizuka) 安全 (Anzen) 病気 (Byouki) 医者 (Isha)

Apprends ensuite

治療 (Chiryou) 回復 (Kaifuku) 診断 (Shindan) 入院 (Nyuuin) 退院 (Taiin)

Avancé

静謐 (Seihitsu) 安寧 (Annei) 鎮静 (Chinsei) 沈黙 (Chinmoku) 平穏無事 (Heion-buji)

Grammaire à connaître

Noun + にする (Ni suru)

安静にする (To rest/keep quiet).

Na-Adjective Modifying Noun

安静な場所 (A quiet place).

Noun + が必要 (Ga hitsuyou)

安静が必要だ (Rest is necessary).

Passive Voice with Commands

安静を命じられる (To be ordered to rest).

Compound Nouns

絶対安静 (Absolute rest).

Exemples par niveau

1

安静にしてください。

Please rest quietly.

Uses 'ni shite kudasai' for a polite request.

2

今日は安静です。

Today is (for) rest.

Simple noun + desu structure.

3

安静な場所が好きです。

I like quiet places.

Ansei used as a na-adjective modifying 'basho' (place).

4

病院は安静です。

The hospital is quiet/restful.

Describing a state.

5

ゆっくり安静にします。

I will rest slowly/thoroughly.

Adverb 'yukkuri' paired with 'ansei ni suru'.

6

安静が一番です。

Rest is the best (thing).

Noun + ga ichiban (is the best).

7

家で安静にします。

I will rest at home.

Location particle 'de'.

8

安静。静かに。

Rest. Be quiet.

Short imperative style.

1

医者に安静をすすめられた。

The doctor recommended rest.

Passive form 'susumerareta' (was recommended).

2

熱があるから、安静にしましょう。

Since you have a fever, let's rest.

Reason 'kara' + volative 'shimashou'.

3

一週間、安静が必要です。

Rest is necessary for one week.

Noun 'hitsuyou' (necessity).

4

仕事より安静が大切です。

Rest is more important than work.

Comparison 'yori... ga taisetsu'.

5

安静にしていれば治ります。

If you stay quiet/rest, you will get better.

Conditional 'reba' (if).

6

しばらく安静に寝てください。

Please lie down and rest for a while.

Compound verb concept 'ansei ni nete'.

7

安静にできる部屋がありますか?

Is there a room where I can rest quietly?

Potential form 'dekiru'.

8

お風呂は控えて、安静にしてください。

Refrain from bathing and please rest.

Te-form for instruction 'hikaete'.

1

骨折したので、絶対安静と言われた。

I broke a bone, so I was told to be on absolute bed rest.

Compound noun 'zettai ansei'.

2

安静を保つために、テレビを消した。

In order to maintain quiet/rest, I turned off the TV.

Purpose 'tame ni' + 'tamotsu' (maintain).

3

精神的な安静が、今の彼には必要だ。

Mental rest is what he needs right now.

Adjective 'seishinteki na' (mental).

4

手術後の経過が良いので、安静が解除された。

The progress after surgery is good, so the rest order was lifted.

Passive 'kaijo sareta' (was canceled/lifted).

5

騒音で安静が妨げられた。

The rest was disturbed by noise.

Passive 'samatagerareta' (was disturbed).

6

安静期間は、外出を控えるべきです。

During the rest period, you should refrain from going out.

Compound noun 'ansei kikan' + 'beki' (should).

7

安静に努めることが、回復への近道です。

Striving to rest is the shortcut to recovery.

Verb 'tsutomeru' (strive/endeavor).

8

彼は安静を無視して仕事に戻った。

He ignored the rest (order) and went back to work.

Verb 'mushi suru' (to ignore).

1

医師の指示に従い、自宅で安静加療中です。

Following the doctor's instructions, I am currently undergoing rest treatment at home.

Compound 'ansei karyou-chuu' (under rest treatment).

2

震災後の避難所では、安静を確保するのが難しい。

In shelters after an earthquake, it is difficult to ensure rest/quiet.

Verb 'kakuho suru' (to secure/ensure).

3

景気は安静な状態を保っている。

The economy is maintaining a stable/quiet state.

Metaphorical use for 'stable state'.

4

心身ともに安静を得るために、山奥へ行った。

To gain peace of mind and body, I went deep into the mountains.

Verb 'eru' (to obtain/gain).

5

過労で倒れた彼女には、十分な安静が必要不可欠だ。

For her, who collapsed from overwork, sufficient rest is indispensable.

Compound 'hitsuyou fukaketsu' (indispensable).

6

安静を強いられる生活は、彼にとって苦痛だった。

A life where rest was forced upon him was painful for him.

Causative-passive 'shiirareru' (to be forced).

7

騒々しい都会を離れ、安静なひとときを過ごした。

Leaving the noisy city, I spent a peaceful moment.

Noun 'hitotoki' (a moment/while).

8

安静を乱す行為は、固く禁じられています。

Acts that disturb the peace/quiet are strictly prohibited.

Verb 'midasu' (to disturb/disrupt).

1

術後の合併症を防ぐため、厳重な安静が求められる。

To prevent postoperative complications, strict rest is required.

Adjective 'genjuu na' (strict/severe).

2

その寺院の境内には、魂の安静を呼び覚ますような静寂があった。

In the temple precincts, there was a silence that seemed to awaken the peace of the soul.

Literary use of 'ansei'.

3

母体の安静を図るため、入院を勧められた。

In order to ensure the rest of the mother (expectant), hospitalization was recommended.

Noun 'botai' (mother's body/expectant mother).

4

安静時心拍数が低いのは、スポーツ心臓の特徴だ。

A low resting heart rate is a characteristic of an athlete's heart.

Technical term 'ansei-ji shinpakusuu'.

5

社会の安静を脅かすような言動は慎むべきだ。

One should refrain from words and actions that threaten the peace of society.

Abstract use: 'social peace'.

6

彼は深い瞑想を通じて、内面的な安静に到達した。

Through deep meditation, he reached internal tranquility.

Noun 'naimenteki' (internal/inner).

7

安静を旨とする治療方針が功を奏した。

The treatment policy, which centered on rest, was successful.

Phrase 'o mune to suru' (to make something the principle).

8

病状が安定し、安静の度合いが下げられた。

The condition stabilized, and the level of required rest was lowered.

Noun 'doai' (degree/extent).

1

絶対安静の解除は、臨床所見の劇的な改善を待たねばならない。

The lifting of absolute bed rest must wait for a dramatic improvement in clinical findings.

Formal structure 'mane ba naranai' (must).

2

静謐な森の中で、彼は自己の存在の根源的な安静を見出した。

In the serene forest, he found the fundamental peace of his own existence.

Highly literary/philosophical usage.

3

法秩序の維持と社会の安静は、表裏一体の関係にある。

The maintenance of legal order and the peace of society are two sides of the same coin.

Idiom 'hyouri ittai' (two sides of the same coin).

4

安静加療の長期化に伴う筋力低下をいかに防ぐかが課題だ。

The challenge is how to prevent muscle weakness associated with prolonged rest treatment.

Grammar 'ni tomonau' (accompanying).

5

墓標の前に立つと、死者の永遠の安静を祈らずにはいられない。

Standing before the gravestone, one cannot help but pray for the eternal rest of the deceased.

Double negative 'zu ni wa irarenai' (cannot help but).

6

経済の過熱を抑え、市場に安静を取り戻すための政策が急務だ。

Policies to suppress economic overheating and restore stability to the market are an urgent matter.

Metaphorical 'market stability'.

7

安静を旨とする旧来の療法に、最新のリハビリテーション理論が挑む。

Modern rehabilitation theory challenges traditional therapies that prioritize rest.

Verb 'idomu' (to challenge).

8

万象が安静に帰する深夜、彼の思考は研ぎ澄まされる。

In the dead of night, when all things return to stillness, his thoughts become sharpened.

Literary phrase 'banshou' (all things).

Collocations courantes

安静にする
絶対安静
安静を保つ
安静が必要
安静期間
安静時心拍数
安静加療
安静を妨げる
安静な状態
精神的安静

Phrases Courantes

安静に過ごす

— To spend time resting quietly. Often used in holiday greetings for sick people.

週末は安静に過ごしました。

安静を命じる

— To order someone to rest (usually by a doctor).

医者が安静を命じた。

安静を強いる

— To force rest upon someone (often by circumstances).

怪我が彼に安静を強いた。

安静第一

— Rest first / Rest is the top priority.

今は安静第一で考えてください。

安静を欠く

— To lack rest or quiet; to be restless.

最近の生活は安静を欠いている。

安静の度合い

— The level or degree of rest required.

安静の度合いを調整する。

安静を乱す

— To disturb the peace or rest of a person or place.

隣室の騒音が安静を乱す。

安静を祈る

— To pray for someone's rest or peace.

故人のご安静をお祈りします。

安静を確保する

— To secure or ensure a quiet environment for rest.

病室の安静を確保する。

安静を求める

— To seek or demand rest/quiet.

患者は安静を求めている。

Expressions idiomatiques

"安静は万病の薬"

— Rest is the medicine for all diseases. (Proverbial usage).

無理をせず、安静は万病の薬ですよ。

Proverb
"心身の安静"

— Peace of mind and body; total tranquility.

都会を離れて心身の安静を得る。

Literary
"永遠の安静"

— Eternal rest (death). A euphemism used in funerals.

彼は永遠の安静についた。

Euphemism
"絶対安静の身"

— Being in a state where absolute rest is required.

今の私は絶対安静の身です。

Formal
"安静を守る"

— To strictly follow the rest protocol.

しっかりと安静を守ってください。

Neutral
"安静を害する"

— To harm or disturb the state of rest.

過度の刺激は安静を害する。

Formal
"安静の暇もない"

— To not even have a moment to rest.

忙しくて安静の暇もない。

Idiomatic
"安静に徹する"

— To devote oneself entirely to resting.

三日間、安静に徹した。

Formal
"安静を旨とする"

— To make rest the primary principle or goal.

彼の治療は安静を旨としている。

Formal
"安静を重んじる"

— To value or prioritize rest.

わが校は生徒の安静を重んじている。

Formal

Famille de mots

Noms

安静 (Rest)
安寧 (Public peace)
静寂 (Silence)
平静 (Calmness)

Verbes

安静にする (To rest)
静まる (To become quiet)
安らぐ (To feel at ease)

Adjectifs

安静な (Quiet/Restful)
静かな (Quiet)
穏やかな (Calm)

Apparenté

安全 (Safety)
安心 (Peace of mind)
静養 (Convalescence)
休息 (Repose)
静止 (Stillness)

Mémorise-le

Moyen mnémotechnique

Think of 'An' as 'Ann' and 'Sei' as 'Say'. 'Ann says you need to rest!' to remember the meaning.

Association visuelle

Imagine a woman (安) sitting quietly in a blue (青) room without any noise or struggle (争).

Word Web

Hospital Bed Quiet Doctor Fever Peace Recovery Stillness

Défi

Try to use '安静' in a sentence describing how you feel after a long day of work, even if you just mean you want to sit on the couch.

Origine du mot

Derived from Middle Chinese (Sino-Japanese reading). The word appears in early Buddhist texts and classical literature to describe a state of non-disturbance.

Sens originel : Peaceful stillness or tranquility of the heart.

Sino-Japanese (Kango).

Contexte culturel

Be careful not to use 'Ansei' as a command to someone who isn't sick, as it can sound like you are treating them like a patient.

In English, we often say 'take it easy' or 'bed rest.' 'Ansei' is closer to 'bed rest' in its clinical weight.

The term 'Zettai Ansei' appears frequently in medical dramas like 'Doctor X' or 'Code Blue.' Many anime series feature a character in 'Ansei' after a battle. Traditional Japanese medicine (Kanpo) emphasizes 'Ansei' as a balance of Qi.

Pratique dans la vie réelle

Contextes réels

At the Clinic

  • 安静にしてください。
  • いつまで安静が必要ですか?
  • 絶対安静ですか?
  • 安静にしていれば大丈夫です。

Calling in Sick

  • 今日は安静にします。
  • 安静が必要と言われました。
  • 家で安静にしています。
  • 安静にして早く治します。

Visiting a Sick Friend

  • 安静にしてね。
  • 安静が一番だよ。
  • 安静を邪魔してごめんね。
  • ゆっくり安静にして。

Sports Injury

  • 全治一ヶ月、安静が必要。
  • 安静期間は練習禁止。
  • 安静にして回復を待つ。
  • 安静が解けたら復帰する。

Reading Medical News

  • 首相は自宅で安静。
  • 安静加療を要する。
  • 精神的安静を保つ。
  • 安静が解除された。

Amorces de conversation

"最近、ゆっくり安静にする時間はありますか? (Do you have time to rest quietly lately?)"

"風邪を引いた時、どうやって安静に過ごしますか? (How do you spend your time resting when you have a cold?)"

"医者に「絶対安静」と言われたことはありますか? (Have you ever been told by a doctor to be on 'absolute bed rest'?)"

"安静にするために一番いい場所はどこだと思いますか? (Where do you think is the best place to rest quietly?)"

"仕事が忙しすぎて、安静が必要だと感じたことはありますか? (Have you ever felt you needed rest because work was too busy?)"

Sujets d'écriture

もし一週間「絶対安静」と言われたら、何をしますか? (If you were told to be on 'absolute bed rest' for a week, what would you do?)

心身の安静を保つために、あなたが毎日していることは何ですか? (What do you do every day to maintain peace of mind and body?)

最近安静が必要だった時のことを書いてください。 (Write about a recent time when you needed rest.)

騒がしい日常の中で、どうやって安静な時間を見つけますか? (How do you find quiet time in your noisy daily life?)

「安静」という言葉から、どのような風景を連想しますか? (What kind of scenery do you associate with the word 'Ansei'?)

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