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B1 noun 6분 분량

重要性

juyosei

연습하기 예시 노트와 팁 重要性 30초 만에

설명 重要性 in your Level:

At the A1 level, you might not use the word '重要性' (jūyōsei) itself very often, but you will learn its root word '重要' (jūyō), which means 'important.' At this stage, you are learning how to say what is important to you using simple sentences like 'This is important' (これは重要です - Kore wa jūyō desu). You might also use '大切' (taisetsu), which is a common word for 'important' or 'precious.' Understanding that things can have different levels of importance is the first step. You will mostly see this word in simple signs or very basic textbook examples that discuss rules or daily habits. For example, 'Important notice' (重要なお知らせ - Jūyō na oshirase). Think of '重要性' as the formal way to say 'how important something is.' Even if you don't speak it yet, recognizing the kanji '重' (heavy) and '要' (essential) will help you understand that a topic is serious and deserves your attention.

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At the A2 level, you are starting to move beyond simple adjectives to describe qualities. You will begin to see '重要性' (jūyōsei) in short readings about health, school, or work. For instance, a passage might say 'The importance of eating breakfast' (朝食を食べる重要性 - Chōshoku o taberu jūyōsei). At this level, you should focus on the structure 'Noun + の + 重要性.' This allows you to name the importance of specific things. You are also learning basic verbs like 'understand' (わかる - wakaru) or 'think' (思う - omou). You can start making simple sentences like 'I think this is important' (これは重要性があると思います - Kore wa jūyōsei ga aru to omoimasu), although using the adjective '重要だ' is still more common. The goal at A2 is to recognize '重要性' as a noun that appears in titles or as a topic of a sentence. It helps you identify the main point of a paragraph in a JLPT N4 level reading task.

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At the B1 level, '重要性' (jūyōsei) becomes a core part of your vocabulary for expressing opinions and discussing social issues. You are now expected to use the word in its proper noun form with formal verbs like '認識する' (ninshiki suru - to recognize) or '説く' (toku - to explain/preach). You can describe the 'importance of environmental protection' (環境保護の重要性) or the 'importance of communication' (コミュニケーションの重要性). At this stage, you should understand the nuance between '重要性' and '大切さ.' While '大切さ' is for personal things, '重要性' is for objective facts or professional matters. You will encounter this word frequently in JLPT N3 level listening and reading, where speakers discuss why a certain policy or habit is significant. You should also be able to use modifiers like '高い' (high) or '低い' (low) with '重要性' to describe varying degrees of significance in a presentation or an essay.

At the B2 level, you should use '重要性' (jūyōsei) fluently in debate, academic writing, and professional settings. You are expected to handle complex sentence structures, such as '～の重要性を強調する' (emphasize the importance of...) or '～の重要性に鑑み' (in view of the importance of...). You can analyze the 'increasing importance' (重要性の増大) of technology in modern society. At this level, you recognize that '重要性' is not just a word for 'important,' but a tool for framing an entire argument. You will see it in editorials and news reports where the 'significance' of a political shift is debated. You should also be comfortable with related terms like '重大性' (gravity) and know when to switch between them. For example, in a business report, you might discuss the '重要性' of a new market, but the '重大性' of a security breach. Your ability to use this word correctly reflects a transition from conversational Japanese to professional-level proficiency.

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At the C1 level, your use of '重要性' (jūyōsei) is nuanced and sophisticated. You use it to discuss abstract concepts and philosophical values. You might explore the 'existential importance' of a cultural tradition or the 'strategic importance' (地政学的な重要性) of a specific region in international relations. You are familiar with formal expressions like '重要性を看過する' (to overlook the importance) or '重要性を再定義する' (to redefine the importance). At this stage, you can distinguish between '重要性' and highly specific synonyms like '枢要性' (pivotal nature) or '肝要さ' (essentiality). You use the word in complex subordinate clauses and can explain the 'multidimensional importance' of a topic. Your writing shows a high degree of lexical control, using '重要性' to build logical and persuasive arguments in high-level academic papers or professional critiques. You also understand the cultural weight the word carries in Japanese decision-making processes, where establishing '重要性' is a prerequisite for any major action.

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At the C2 level, '重要性' (jūyōsei) is a fundamental building block in your mastery of the Japanese language. You use it with the precision of a native speaker in the most demanding contexts, such as legal drafting, high-level diplomacy, or philosophical discourse. You can dissect the 'ontological importance' of a concept or discuss the 'shifting paradigms of importance' across historical eras. You are adept at using the word in rhetorical devices, such as litotes or hyperbole, to emphasize a point. You understand the subtle implications when a speaker chooses '重要性' over other nouns in a political speech to sound more objective and authoritative. Your command of the word allows you to navigate the most subtle nuances of formal Japanese, recognizing how '重要性' functions within the broader structure of 'Keigo' (honorific speech) and formal logic. You can critique the 'relative importance' of various factors in a complex system, demonstrating a deep understanding of both the language and the conceptual frameworks of Japanese thought.

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연습하기 예시 노트와 팁

重要性 30초 만에

A formal noun meaning 'importance' or 'significance' used widely in business and academic contexts.
Formed by adding the suffix '性' (-ity) to the root '重要' (important).
Typically used with verbs like 'recognize' (認識する) or 'emphasize' (強調する).
Distinguished from '大切さ' (taisetsu-sa) by its objective and analytical nuance.

The word 重要性 (じゅうようせい - jūyōsei) is a foundational noun in the Japanese language, particularly within professional, academic, and formal contexts. It translates directly to "importance" or "significance." Structurally, it is composed of three kanji characters: 重 (heavy/important), 要 (essential/pivot), and 性 (nature/quality). The suffix "性" functions similarly to the English suffixes "-ity" or "-ness," transforming the adjective 重要 (important) into an abstract noun representing the quality of being important.

Grammatical Category: Abstract Noun (名詞). It often functions as the object of verbs like 'understand' or 'emphasize'.
Register: Formal to Semi-Formal. While used in daily conversation, it is the standard term for news, business reports, and academic papers.

In Japanese society, expressing the degree of significance is crucial for prioritization. When someone uses 重要性, they are usually framing a discussion around value, necessity, or impact. Unlike the more colloquial 大切さ (taisetsu-sa), which often carries an emotional or personal weight (like the importance of a friend), 重要性 is objective and analytical. You would use it to discuss the importance of environmental protection, economic policy, or a specific step in a technical process.

この計画の重要性を再確認する必要があります。(We need to reconfirm the importance of this plan.)

Historically, the combination of 'heavy' and 'essential' suggests a pivot point that carries great weight. In a business meeting, emphasizing the 重要性 of a deadline conveys a sense of professional urgency. In an academic setting, discussing the 重要性 of a discovery highlights its contribution to the field. It is a versatile tool for any speaker aiming for clarity and precision in their Japanese communication.

睡眠の重要性はいくら強調してもしすぎることはない。(The importance of sleep cannot be overemphasized.)

Using 重要性 correctly involves understanding its typical verb pairings and particle usage. Most commonly, it acts as the object of a sentence, followed by the particle を (o). Common verbs include 理解する (rikai suru - to understand), 認識する (ninshiki suru - to recognize), and 強調する (kyōjō suru - to emphasize). These combinations allow you to articulate how someone perceives or communicates value.

With Adjectives: 重要性が高い (High importance), 重要性が低い (Low importance), 計り知れない重要性 (Immeasurable importance).
As a Subject: 重要性が増す (Importance increases), 重要性が失われる (Importance is lost).

Another frequent pattern is [Noun] + の + 重要性. This structure defines exactly what is being considered important. For instance, 教育の重要性 (the importance of education) or 安全の重要性 (the importance of safety). In complex sentences, you might see it paired with について (about), such as 重要性について議論する (discuss the importance).

彼はチームワークの重要性を説いた。(He preached the importance of teamwork.)

When you want to describe a situation where the importance is changing, use 増大する (zōdai suru - to expand/increase). For example, データの重要性が増大している (The importance of data is increasing). This sounds much more professional than simply saying 'data is important.' Using the noun form allows for more nuanced descriptions of trends and states of being.

情報の重要性を認識しなければならない。(We must recognize the importance of information.)

You will encounter 重要性 in a variety of real-world scenarios in Japan. One of the most common places is the evening news (ニュース). Anchors often discuss the 重要性 of new legislation, climate change initiatives, or international relations. It provides a formal frame for why the audience should care about the topic at hand.

In Business: Meetings, annual reports, and training seminars. Managers use it to align the team's focus on key objectives.
In Education: Lectures and textbooks. Professors emphasize the importance of specific theories or historical events.

In a corporate Japanese environment, the word is indispensable during the 朝礼 (chōrei - morning assembly) or during project kick-offs. A leader might say, "このプロジェクトの成功におけるスピードの重要性についてお話しします" (I will talk about the importance of speed in the success of this project). This sets a serious tone and indicates that what follows is a priority.

政府は食料自給率向上の重要性を訴えた。(The government appealed for the importance of improving the food self-sufficiency rate.)

Furthermore, you will see it in health-related posters or public service announcements. "予防接種の重要性" (The importance of vaccinations) or "手洗いの重要性" (The importance of washing hands) are common sights in clinics and public spaces. It serves as an authoritative call to action, reminding the public of their responsibilities for the greater good.

One of the most frequent mistakes learners make is confusing the noun 重要性 (jūyōsei) with the adjective 重要 (jūyō). While they share the same root, their grammatical functions are distinct. You cannot say "これは重要性だ" to mean "this is important"; instead, you must say "これは重要だ" or "これには重要性がある" (this has importance).

Wrong Usage: 重要性をな (Incorrect particle or usage as a Na-adjective).
Correct Usage: 重要性を理解する (Understand the importance).

Another common error is using 重要性 in overly casual settings where 大切さ (taisetsu-sa) or 大事さ (daiji-sa) would be more appropriate. For example, telling a friend "友情の重要性を感じている" (I feel the importance of friendship) might sound a bit like a textbook or a formal speech. In a casual chat, "友情の大切さを感じている" sounds more natural and heartfelt.

❌ 彼は重要性をな人だ。
✅ 彼は重要な人だ。(He is an important person.)

Finally, learners sometimes struggle with the degree modifiers. While you can say "とても重要だ" (very important), you should say "重要性が非常に高い" (importance is extremely high) when using the noun form. Mixing these levels of formality can make the Japanese sound disjointed. Consistency in register is key to sounding like a proficient speaker.

Japanese has several ways to express importance, each with its own nuance and register. Understanding these differences allows you to choose the word that best fits your context. 重要性 is the analytical choice, but others might be better for emotional or urgent situations.

大切さ (Taisetsu-sa): Emphasizes emotional value, care, or personal significance. Use this for family, health, or precious memories.
重大性 (Jūdāisei): Refers to the gravity or seriousness of a situation. Often used for crimes, accidents, or critical errors.
必須性 (Hissusei): Indicates that something is absolutely required or essential. Often used in technical or legal requirements.

If you are talking about the "key" or "essence" of something, you might use 肝要 (kan'yō). This is a more literary and slightly archaic-sounding word that implies something is the 'heart and soul' of the matter. For example, "忍耐が肝要だ" (Patience is essential). While 重要性 is a noun, 肝要 is typically used as a Na-adjective.

事の重大性を考えると、黙ってはいられない。(Considering the gravity of the matter, I cannot remain silent.)

In academic writing, you might also encounter 枢要 (sūyō), which refers to a central or pivotal importance, like a 'hub.' Choosing between these depends on whether you want to sound objective (重要性), emotional (大切さ), serious (重大性), or technical (必須性).

How Formal Is It?

재미있는 사실

The character '要' (essential) originally depicted a person with hands on their waist, representing the 'waist' as the central, essential part of the body.

발음 가이드

UK dʒuː.jɔː.seɪ

US dʒu.jo.seɪ

Japanese is a pitch-accent language. For '重要性', the pitch typically stays relatively flat or has a slight drop after 'yo'.

난이도

독해 3/5

Kanji are common but require knowledge of N3/N2 level characters.

쓰기 4/5

The kanji '要' can be tricky to write correctly without practice.

말하기 2/5

Pronunciation is straightforward once the long vowels are mastered.

듣기 2/5

The suffix '-sei' is easy to pick out in formal speech.

다음에 무엇을 배울까

선수 학습

重要 (Important) 大切 (Important/Precious) 必要 (Necessary) 重い (Heavy) 性 (Nature/Quality)

다음에 배울 것

重大 (Serious/Grave) 肝要 (Essential) 優先順位 (Priority) 認識 (Recognition) 強調 (Emphasis)

고급

枢要 (Pivotal) 存立 (Existence) 不可欠 (Indispensable) 緊要 (Urgent and important)

알아야 할 문법

Noun + の + 重要性

教育の重要性 (The importance of education)

重要性 + が + 高い/低い

重要性が高いタスク (A high-importance task)

～の重要性を + [Verb]

重要性を認識する (Recognize the importance)

～における + 重要性

仕事における重要性 (Importance in work)

～についての + 重要性

安全についての重要性 (Importance regarding safety)

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수준별 예문

水は私たちの生活に重要です。

Water is important for our lives.

Using the adjective '重要' (jūyō) with 'desu'.

これは重要な本です。

This is an important book.

Using '重要' as a Na-adjective modifying a noun.

テストは重要ですか？

Is the test important?

A simple question using '重要' (jūyō).

時間はとても重要です。

Time is very important.

Using the adverb 'とても' (very) with '重要'.

家族は大切です。

Family is important.

Using '大切' (taisetsu) for personal/emotional importance.

重要なルールを守りましょう。

Let's follow the important rules.

Using '重要' to describe a rule.

名前を書くことは重要です。

Writing your name is important.

A gerund phrase 'writing a name' as the subject.

この場所は重要です。

This place is important.

Simple demonstrative 'this place' as the subject.

朝ごはんの重要性を知っていますか？

Do you know the importance of breakfast?

Introduction of the noun '重要性' (jūyōsei).

運動の重要性について読みました。

I read about the importance of exercise.

Using '～について' (about) with the noun.

睡眠の重要性は高いです。

The importance of sleep is high.

Using '高い' (high) to describe importance.

先生は漢字の重要性を話しました。

The teacher talked about the importance of Kanji.

Direct object '重要性' with the verb '話す'.

この仕事の重要性がわかりました。

I understood the importance of this job.

Using 'わかる' (to understand) with the subject particle 'ga'.

野菜を食べる重要性を教えました。

I taught the importance of eating vegetables.

The phrase 'eating vegetables' modifies 'importance'.

安全の重要性を忘れないでください。

Please do not forget the importance of safety.

Negative imperative 'don't forget'.

お金の重要性について考えます。

I will think about the importance of money.

Using '考える' (to think) with the topic.

環境保護の重要性を認識すべきです。

We should recognize the importance of environmental protection.

Using '認識する' (to recognize) and 'べき' (should).

彼はチームワークの重要性を強調した。

He emphasized the importance of teamwork.

The verb '強調する' (to emphasize) is a common pairing.

情報の重要性がますます高まっている。

The importance of information is increasing more and more.

Using 'ますます' (more and more) and '高まる' (to increase).

この薬の重要性を患者に説明した。

I explained the importance of this medicine to the patient.

Standard 'A ni B o setsumei suru' pattern.

計画における準備の重要性を説く。

Explain the importance of preparation in a plan.

Using 'における' (in/at) to specify the context.

語学学習の重要性を再確認した。

I reconfirmed the importance of language learning.

The prefix '再-' (re-) added to '確認' (confirm).

その問題の重要性を過小評価してはいけない。

You must not underestimate the importance of that problem.

Using '過小評価する' (to underestimate).

社会における教育の重要性を議論する。

Discuss the importance of education in society.

The verb '議論する' (to discuss).

新しい技術の重要性を説得力を持って説明した。

He explained the importance of the new technology persuasively.

Using '説得力を持って' (with persuasiveness).

この発見の重要性は計り知れない。

The importance of this discovery is immeasurable.

The idiomatic expression '計り知れない' (immeasurable).

現代社会におけるプライバシーの重要性が問われている。

The importance of privacy in modern society is being questioned.

Passive voice '問われている' (is being questioned).

経営陣はコスト削減の重要性を打ち出した。

The management team put forward the importance of cost reduction.

The phrasal verb '打ち出す' (to set forth/put forward).

精神的健康の重要性が広く認められるようになった。

The importance of mental health has come to be widely recognized.

The structure '～ようになる' (to come to be).

外交における信頼の重要性を軽視してはならない。

The importance of trust in diplomacy must not be neglected.

Using '軽視する' (to neglect/make light of).

その政策は農業の重要性を反映している。

The policy reflects the importance of agriculture.

The verb '反映する' (to reflect).

リーダーシップの重要性について、多角的な視点から検討する。

Examine the importance of leadership from multiple perspectives.

Using '多角的な視点' (multiple perspectives).

歴史的背景を考慮すると、この文書の重要性は極めて高い。

Considering the historical background, the importance of this document is extremely high.

Using '極めて' (extremely) and '考慮すると' (considering).

彼はそのプロジェクトにおけるスピードの重要性を看過していた。

He had overlooked the importance of speed in that project.

The formal verb '看過する' (to overlook).

食料安全保障の重要性に鑑み、新たな法案が提出された。

In view of the importance of food security, a new bill was submitted.

The advanced literary expression '～に鑑み' (in view of).

文化的多様性の重要性を維持することは、我々の責務である。

Maintaining the importance of cultural diversity is our responsibility.

Using '責務' (duty/responsibility) and '維持する' (maintain).

その研究は、初期教育の重要性を科学的に立証した。

The research scientifically proved the importance of early education.

The verb '立証する' (to prove/substantiate).

市場の流動性の重要性が、金融危機を通じて再認識された。

The importance of market liquidity was re-recognized through the financial crisis.

Using 'を通じて' (through/via).

持続可能な開発の重要性を、国際社会に訴えかける。

Appeal to the international community regarding the importance of sustainable development.

The verb '訴えかける' (to appeal to).

個人の尊厳という根源的な重要性を、憲法は保障している。

The Constitution guarantees the fundamental importance of individual dignity.

Using '根源的な' (fundamental/root) and '保障する' (guarantee).

存在論的な観点から、自己意識の重要性を論じる。

Discuss the importance of self-consciousness from an ontological perspective.

Using '存在論的な' (ontological) and '論じる' (to discuss/argue).

その発見が持つパラダイム・シフトとしての重要性は、疑いようがない。

The importance of that discovery as a paradigm shift is beyond doubt.

The expression '疑いようがない' (beyond doubt).

言論の自由という不可侵の重要性を、我々は死守しなければならない。

We must defend to the death the inviolable importance of freedom of speech.

Using '不可侵' (inviolable) and '死守する' (defend to the death).

地政学的な重要性の変遷が、国家間のパワーバランスを塗り替えた。

The transition of geopolitical importance has redrawn the power balance between nations.

Using '変遷' (transition/change) and '塗り替える' (to redraw/rewrite).

美学における「間」の重要性は、日本文化の精髄を成している。

The importance of 'ma' (space/pause) in aesthetics constitutes the essence of Japanese culture.

Using '精髄を成す' (to constitute the essence).

倫理的判断における客観性の重要性を、改めて問い直す必要がある。

It is necessary to re-examine the importance of objectivity in ethical judgment.

The verb '問い直す' (to question again/re-examine).

伝統の継承という文化的な重要性は、単なる懐古趣味ではない。

The cultural importance of passing down traditions is not mere nostalgia.

Using '継承' (succession) and '懐古趣味' (nostalgia/antiquarianism).

イノベーションの重要性を標榜しつつも、実態が伴わない組織も多い。

While advocating for the importance of innovation, many organizations lack the actual substance.

Using '標榜する' (to advocate/profess) and '伴わない' (not accompanied by).

동의어

大切さ肝要重大性

반의어

些細無意味

자주 쓰는 조합

重要性が高い

重要性を強調する

重要性を認識する

重要性が増す

重要性を説く

重要性を理解する

重要性を認める

重要性を欠く

重要性を再確認する

計り知れない重要性

자주 쓰는 구문

重要性を鑑みて

— In view of the importance. A formal way to introduce a reason for an action.

事の重要性を鑑みて、会議を延期した。

重要性に乏しい

— Lacking importance. Used to describe something trivial or insignificant.

彼の提案は重要性に乏しい。

重要性を帯びる

— To take on importance. Used when a situation becomes significant due to context.

その発言は政治的な重要性を帯びてきた。

最重要性

— The highest importance. Used for top priorities.

最重要性を持つ課題に取り組む。

社会的な重要性

— Social importance. Significance within the context of society.

このボランティアは社会的な重要性がある。

歴史的な重要性

— Historical importance. Significance in the context of history.

この建物は歴史的な重要性を持っている。

戦略的な重要性

— Strategic importance. Crucial for a plan or military strategy.

この港は戦略的な重要性が高い。

実用的な重要性

— Practical importance. Significance in terms of actual use.

この機能は実用的な重要性がある。

相対的な重要性

— Relative importance. Significance compared to other things.

各要素の相対的な重要性を評価する。

潜在的な重要性

— Potential importance. Significance that is hidden or future-facing.

この技術には潜在的な重要性がある。

자주 혼동되는 단어

重要性 vs 重要 (Jūyō)

This is a Na-adjective (important). Use '重要性' when you need a noun (importance).

重要性 vs 重大性 (Jūdāisei)

Focuses on 'gravity' or 'seriousness,' often for accidents or crimes. '重要性' is more general.

重要性 vs 大切さ (Taisetsu-sa)

More emotional and personal. Use '重要性' for objective or professional significance.

관용어 및 표현

"重きを置く"

— To place weight/emphasis on something. Similar to emphasizing importance.

彼は質よりも量に重きを置いている。

Neutral/Formal

"肝に銘じる"

— To engrave on one's heart. To deeply remember the importance of something.

先生の教えを肝に銘じます。

Formal

"眼目とする"

— To regard as the main point or eye. To treat as the central importance.

この計画は効率化を眼目としている。

Formal/Literary

"一目置く"

— To acknowledge someone's importance/superiority. Literally, to place one stone (in Go).

彼は業界で一目置かれている。

Neutral

"要となる"

— To become the pivot/keystone. To be the most important part.

彼がこのチームの要となっている。

Neutral/Formal

"死活問題"

— A matter of life and death. An extremely important issue.

予算削減は我々にとって死活問題だ。

Neutral/Formal

"眉に唾をつける"

— To take with a grain of salt. To doubt the importance or truth of something.

彼の話は眉に唾をつけて聞くべきだ。

Idiomatic/Casual

"金科玉条"

— A golden rule. Something of supreme importance that must be followed.

彼はマニュアルを金科玉条としている。

Formal/Literary

"二の次にする"

— To put in second place. To treat as less important.

遊びは二の次にして勉強しなさい。

Neutral

"目もくれない"

— To not even give a glance. To treat as completely unimportant.

彼は流行には目もくれない。

Neutral

혼동하기 쉬운

重要性 vs 必要性 (Hissusei)

Both deal with things that are needed.

Importance (重要性) refers to value/significance, while Necessity (必要性) refers to something being required for a result.

この計画の重要性は高いが、今すぐやる必要性はない。(The importance is high, but there's no necessity to do it now.)

重要性 vs 重大性 (Jūdāisei)

Both imply something is not trivial.

Jūdāisei implies a heavy consequence or serious impact, often negative. Jūyōsei is a neutral measure of value.

ミスの重大性を認識する。(Recognize the gravity of the mistake.)

重要性 vs 貴重さ (Kichō-sa)

Both relate to value.

Kichō-sa implies rarity or being 'precious.' Jūyōsei implies being 'essential' or 'significant' for a purpose.

水は貴重だが、この会議ではその重要性を議論する。(Water is precious, but we will discuss its importance in this meeting.)

重要性 vs 優先性 (Yūsensei)

Important things usually come first.

Yūsensei refers to the order of operations (priority), while Jūyōsei refers to the inherent value.

重要性は高いが、優先性は低いタスク。(A task with high importance but low priority.)

重要性 vs 有効性 (Yūkōsei)

Important things are often effective.

Yūkōsei refers to 'effectiveness' or 'validity.' Jūyōsei refers to 'significance.'

薬の有効性と、その開発の重要性。(The effectiveness of the drug and the importance of its development.)

문장 패턴

[Noun]の重要性を理解する

ルールの重要性を理解する。

[Noun]の重要性を強調する

彼は準備の重要性を強調した。

[Noun]の重要性が高まっている

データの重要性が高まっている。

[Noun]の重要性を認識すべきだ

安全の重要性を認識すべきだ。

[Noun]の重要性に鑑みて、[Action]

事の重要性に鑑みて、中止を決定した。

[Noun]の重要性を看過できない

この問題の重要性を看過できない。

[Noun]という根源的な重要性

自由という根源的な重要性を守る。

[Noun]の重要性を多角的に論じる

その政策の重要性を多角的に論じる。

어휘 가족

명사

重要 (Importance/Important)

要点 (Main point)

要員 (Essential personnel)

重量 (Weight)

동사

要する (To require)

重んじる (To value/respect)

형용사

重要な (Important - Na-adj)

重い (Heavy - I-adj)

要らぬ (Unnecessary)

사용법

frequency

Highly frequent in written Japanese, news, and business communication.

자주 하는 실수

これは重要性です。 → これは重要です。
You cannot use the noun form '重要性' as a predicate to describe a thing. You must use the adjective '重要'.
重要性な人 → 重要な人
'重要性' is a noun, not a Na-adjective. To modify a person, use '重要な' or '大切な'.
とても重要性がある → 非常に重要性が高い
While 'とても重要性がある' is technically okay, '非常に重要性が高い' is the more natural, professional collocation.
友情の重要性を感じた。 → 友情の大切さを感じた。
In personal, emotional contexts, '大切さ' is much more natural than the analytical '重要性'.
重要性に強調する → 重要性を強調する
The verb '強調する' takes the direct object particle 'を', not 'に'.

팁

Noun vs Adjective

Always remember that '重要' is a Na-adjective and '重要性' is a noun. You use them differently in a sentence: '重要な課題' vs '課題の重要性'.

Sound Professional

In business emails, use '重要性を認識しております' to show you understand the significance of a request. It sounds very professional and reliable.

Suffix Clue

The suffix '-性' (sei) is your best friend. Whenever you hear it, you know the speaker is talking about a 'property' or 'nature' of something, which helps in complex listening tasks.

Pairing

Learn '重要性' together with the verb '強調する' (emphasize). They are like bread and butter in Japanese news and presentations.

Subjectivity

Use '大切さ' for things that are close to your heart. Use '重要性' for things that are important for everyone or for a system.

Intonation

Keep the 'sei' short and clear. Don't drag it out, or it might sound like another word. The pitch should be stable across the whole word.

Kanji Practice

Practice the kanji '要'. It appears in many words like '必要' (necessary) and '要求' (demand). Mastering it will help you across many vocabulary sets.

Headlines

Look for '重要性' in news headlines. It's a quick way to identify the topic of an article about policy or social trends.

Heavy Essential

Just remember: Heavy (重) + Essential (要) + Nature (性) = Importance. It's a heavy, essential quality.

Degree

Instead of saying 'very important,' try '重要性が極めて高い' in your next Japanese speech. It will impress your listeners!

암기하기

기억법

Think of a 'Heavy' (重) 'Pivot' (要) that has the 'Nature' (性) of holding everything together. If the pivot is heavy, it has high Importance.

시각적 연상

Imagine a giant, heavy golden key (essential) sitting on a scale. The scale tips because of its weight (importance).

Word Web

重要 (Root) 重要性 (Noun) 最重要 (Top priority) 重要人物 (VIP) 要 (Pivot) 重い (Heavy) 性格 (Character) 必然性 (Inevitability)

챌린지

Write three sentences about your job or hobby using '重要性' to explain what matters most.

어원

Composed of Sino-Japanese (Kango) roots. '重' means heavy or serious. '要' means essential or pivot point. '性' is a suffix indicating nature or quality.

원래 의미: The state of being heavy and essential.

Sino-Japanese (Kanji-based vocabulary).

문화적 맥락

None. It is a neutral, formal term.

In English, we often say 'it matters' or 'it's important.' Japanese uses '重要性' to sound more professional and structured.

The phrase '重要性の原則' (Principle of Materiality) in Japanese accounting. Academic papers often start with '～の重要性について' (Regarding the importance of...).

실생활에서 연습하기

실제 사용 상황

Business Meetings

プロジェクトの重要性
スケジュールの重要性
品質の重要性
重要性を共有する

Academic Writing

研究の重要性
先行研究の重要性
論理的色彩の重要性
重要性を論じる

Health and Safety

予防の重要性
健康管理の重要性
安全確認の重要性
重要性を啓発する

Politics and News

法案の重要性
外交の重要性
平和の重要性
重要性を訴える

Interpersonal Relations

信頼の重要性
対話の重要性
感謝の重要性
重要性を感じる

대화 시작하기

"あなたは仕事において、何が一番重要性があると思いますか？ (What do you think has the most importance in work?)"

"最近、健康の重要性を感じる出来事はありましたか？ (Have you had any events recently that made you feel the importance of health?)"

"子供の教育において、最も重要性が高いものは何でしょうか？ (In child education, what do you think has the highest importance?)"

"環境問題の重要性について、どう考えますか？ (What are your thoughts on the importance of environmental issues?)"

"チームワークの重要性を感じた経験を教えてください。 (Please tell me about an experience where you felt the importance of teamwork.)"

일기 주제

今日の生活の中で、時間の重要性をどのように感じましたか？ (How did you feel the importance of time in your life today?)

あなたが人生で最も重要性が高いと考えている価値観は何ですか？ (What values do you consider to have the highest importance in your life?)

新しいスキルを学ぶことの重要性について書いてください。 (Write about the importance of learning new skills.)

友人関係における誠実さの重要性について考察してください。 (Reflect on the importance of sincerity in friendships.)

将来の目標を達成するために、今取り組んでいることの重要性を説明してください。 (Explain the importance of what you are currently doing to achieve your future goals.)

자주 묻는 질문

10 질문

Not usually. To say a person is important, use '重要な人物' (jūyō na jinbutsu) or '大切な人' (taisetsu na hito). Using '重要性' for a person sounds like you are treating them as a data point or a variable in a study.

'重要性' is objective and professional (e.g., importance of a law). '大切さ' is subjective and emotional (e.g., importance of a friend's feelings). Use '重要性' in reports and '大切さ' in personal letters.

Yes, but it sounds a bit formal. If you are talking to a friend about a movie, you wouldn't say its '重要性'. You would use it when talking about serious topics like work, health, or society.

You say '重要性が極めて高い' (jūyōsei ga kiwamete takai) or '非常に重要性が高い' (hijō ni jūyōsei ga takai). You use 'high/low' to describe the level of importance.

Yes, but '重大性' (jūdāisei) is more common for negative things like crimes or accidents. However, you can say 'その問題の重要性' to mean how significant the problem is to solve.

It depends on the verb. '重要性を理解する' (o), '重要性がある' (ga), '重要性について考える' (ni tsuite). It functions like any other noun.

Yes, it is typically categorized as JLPT N3 level vocabulary, though it is used extensively in N2 and N1 materials as well.

Almost always when you are specifying what is important. [Noun] + の + 重要性. Without 'の', it stands alone as 'the importance'.

No. You should say '重要だ' (It is important) or '重要性がある' (There is importance). '重要性だ' sounds like you are defining the word itself.

There isn't a single noun that means 'unimportance.' You usually say '重要性が低い' (low importance) or use words like '些細なこと' (trivial matter).

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