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B1 verb 8 min read

衝突する

shoutotsu suru
Examples 衝突する in 30 Seconds
Explanation 衝突する in your Level:
At the A1 level, you don't need to use '衝突する' (shoutotsu suru) very often. It is a bit formal and difficult because it uses kanji. Instead, A1 students usually learn the word 'ぶつかる' (butsukaru), which means 'to bump' or 'to hit'. For example, if you walk into a door, you say 'ドアにぶつかりました'. However, you might see '衝突' on signs or in very simple news headlines about cars. Think of it as a 'big crash' word. If you see two toy cars hitting each other, you can try saying '衝突！' to practice. Just remember that for people bumping into each other, 'butsukaru' is much more natural and friendly. Focus on the idea of 'two things hitting' first. Don't worry about the abstract meanings like 'clashing opinions' until you are more advanced. At this stage, just recognize that 'shoutotsu' is a formal word for a crash.
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At the A2 level, you can start using '衝突する' specifically when talking about traffic or news you've heard. While 'butsukaru' is still your best friend for daily life, 'shoutotsu suru' helps you sound more like a reporter or a serious observer. You should learn the basic grammar: 'Car A と Car B が衝突しました' (Car A and Car B collided). You might also start to see it in simple stories where two characters have a 'clash' of ideas, though 'kenka' (fight) is still more common. A2 learners should notice that 'shoutotsu' is a noun that becomes a verb by adding 'suru'. This is a common pattern in Japanese. If you are describing a travel experience and saw an accident, using 'shoutotsu' will make your Japanese sound more mature. Practice using the particle 'ni' for hitting stationary things: 'Kabe ni shoutotsu shimashita' (Hit the wall).
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As a B1 learner, you should be comfortable using '衝突する' in both physical and abstract contexts. This is the level where you move beyond just 'car crashes' and start talking about '意見の衝突' (clash of opinions) or '予定の衝突' (schedule clash). You will encounter this word in JLPT N3 level reading materials and intermediate textbooks. You should understand the nuance that 'shoutotsu' is more serious and formal than 'butsukaru'. For example, if you are explaining to a colleague why you can't attend a meeting, saying '予定が衝突してしまいました' sounds professional. You should also be aware of the passive form '衝突される' (to be collided with/to be run into). At B1, you are expected to use the correct particles ('to' or 'ni') consistently and understand the word when it appears in newspaper articles about social issues or minor international conflicts.
At the B2 level, you should use '衝突する' to describe complex social, political, and scientific phenomena. You should be able to discuss '文化の衝突' (clash of cultures) or '利害の衝突' (conflict of interest) with ease. B2 learners should also recognize related compounds like '正面衝突' (shoumen shoutotsu - head-on collision) and '武力衝突' (buryoku shoutotsu - armed clash). You will see this word in N2 level exams, often in essays about sociology or science. You should also understand the metaphorical use in literature, where 'emotions clash'. Your grammar should be precise, using the word to distinguish between a simple 'bump' and a significant 'collision' or 'conflict'. You might also use it in a causative sense: 'AをBに衝突させる' (to make A collide with B), which is useful in technical or descriptive writing.
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At the C1 level, '衝突する' is a tool for nuanced academic and professional discourse. You should understand its use in specialized fields like physics (particle collisions) and law (conflict of laws). You should be able to use it to describe the 'friction' or 'clash' between complex abstract systems, such as '法理の衝突' (clash of legal principles). C1 learners should also be familiar with synonyms like '不和' (fuwa - discord) or '軋轢' (atsureki - friction/strife) and know when 'shoutotsu' is the more appropriate, more active choice. You will encounter this word in high-level literature and editorials where it might describe the 'clash' of civilizations or eras. Your usage should reflect an understanding of the word's weight—it implies a significant impact that often results in change, damage, or a need for resolution.
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At the C2 level, '衝突する' is used with complete native-like precision across all possible domains. You can use it in philosophical debates to discuss the 'clash' of existential values or in high-level scientific papers to describe subatomic interactions. You understand the historical and etymological roots of the kanji 衝 (brunt/path) and 突 (stab/sudden), allowing you to appreciate the word's inherent energy. You can effortlessly switch between 'shoutotsu' and its more obscure synonyms depending on the desired register and tone. Whether you are analyzing a geopolitical 'armed clash' in a policy paper or describing the 'collision' of two galaxies in an astrophysics lecture, you use the word to convey the exact scale and consequence of the event. At this level, the word is not just a vocabulary item but a precise instrument for describing the fundamental interactions of the universe and human society.
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Examples

衝突する in 30 Seconds

  • 衝突する (shoutotsu suru) means to collide physically or clash metaphorically, commonly used for accidents and disagreements.
  • It is a formal 'suru' verb, more serious than the casual 'butsukaru' (to bump into).
  • Grammatically, it uses 'と' for mutual collisions and 'に' for hitting a stationary object.
  • Common contexts include traffic reports, business meeting disagreements, and scientific descriptions of particle interactions.

The Japanese verb 衝突する (shoutotsu suru) is a versatile term that primarily describes two or more entities hitting each other with force. At its most literal level, it refers to physical collisions, such as two vehicles hitting one another on a highway or a bird flying into a window. However, its utility extends far beyond the physical realm into the abstract, where it describes the clashing of ideas, interests, schedules, or personalities. Understanding this word requires a grasp of both the kinetic energy of a crash and the social friction of a disagreement.

Physical Collision
This refers to the direct impact between objects. In news reports, you will frequently hear '車とトラックが衝突した' (A car and a truck collided). It implies a significant impact rather than a minor scratch.
Conflict of Interest/Opinion
When two people have opposing views that cannot coexist peacefully, they 'shoutotsu' (clash). For example, '意見が衝突する' (opinions clash). This is common in professional or political contexts.
Scheduling Conflicts
In business Japanese, if two meetings are set for the same time, their 'yotei' (schedules) are said to 'shoutotsu suru'. This is a very common way to explain why you cannot attend an event.

交差点で二台の車が激しく衝突するのを目撃しました。(I witnessed two cars colliding violently at the intersection.)

新プロジェクトの方針をめぐって、上司と部下が衝突する場面があった。(There was a scene where the boss and the subordinate clashed over the new project's direction.)

残念ながら、その日は別の予定と衝突してしまい、出席できません。(Unfortunately, that day clashes with another appointment, so I cannot attend.)

二つの銀河が数億年かけて衝突する現象は、宇宙では珍しくありません。(The phenomenon of two galaxies colliding over hundreds of millions of years is not uncommon in the universe.)

感情が衝突するのを避けるため、彼は沈黙を選んだ。(He chose silence to avoid a clash of emotions.)

In a broader cultural sense, Japan's emphasis on harmony (wa) makes the word 'shoutotsu' particularly weighty. To 'shoutotsu' with someone in a meeting is often seen as a significant event that requires resolution, unlike in some Western cultures where debate and 'clashing' might be viewed as a healthy part of the creative process. Therefore, when you use this word to describe human interaction, it carries a nuance of serious friction or an unavoidable breakdown in communication. In scientific contexts, it is the standard term for particles or celestial bodies hitting each other, appearing in textbooks and research papers frequently.

Mastering the usage of 衝突する involves understanding its grammatical particles and the context of the collision. It is a 'suru' verb, meaning it follows the standard conjugation patterns for irregular verbs in Japanese. The most important aspect is the relationship between the subjects of the collision.

Particle 'と' (With)
Used when two active subjects collide with each other. Example: 'AとBが衝突する'. Both parties are often seen as equally involved in the impact.
Particle 'に' (Into/Against)
Used when one moving object hits a stationary or passive object. Example: '車が壁に衝突する' (The car collided into the wall). Here, the focus is on the object doing the hitting.
Abstract Subjects
When ideas or schedules clash, the subject is often '意見' (opinion) or '予定' (schedule). Example: '予定が衝突してしまった' (The schedules ended up clashing).

大型の貨物船が、霧の中で氷山に衝突しました。(A large cargo ship collided with an iceberg in the fog.)

若者たちのグループと警察が激しく衝突したニュースが流れた。(News broke that a group of youths and the police clashed violently.)

私の個人的な価値観と、会社の利益が衝突することがあります。(My personal values sometimes conflict with the company's profits.)

二つの文化が衝突することで、新しい芸術が生まれることもある。(New art can sometimes be born from the clashing of two cultures.)

サーバーの更新作業と、ユーザーのアクセス集中が衝突して、システムがダウンした。(The server update work and the concentration of user access clashed, causing the system to go down.)

When discussing social conflicts, '衝突する' is more serious than '口論する' (to argue/quarrel). A 'shoutotsu' suggests a fundamental misalignment or a physical confrontation (like a riot), whereas 'kouron' is strictly verbal. In the context of physics, you will see '弾性衝突' (elastic collision) and '非弾性衝突' (inelastic collision), showing how the word is the standard term for scientific analysis of impact. Whether you are reporting a fender-bender or a philosophical disagreement, 'shoutotsu suru' provides the necessary weight to the event.

The word 衝突する is a staple of several specific domains in Japanese life. If you listen to the news, work in a Japanese office, or study science, you will encounter it daily. It is not just a 'book word'; it is a high-frequency functional term used to describe reality's frictions.

News and Media
Traffic accident reports are the number one source of this word. You will hear '正面衝突' (shoumen shoutotsu - head-on collision) or '追突' (tsuitotsu - rear-end collision, a specific type of shoutotsu).
Corporate Environment
In meetings, people might say '意見の衝突を恐れずに' (without fearing a clash of opinions). It is also used in project management when tasks or resources overlap in a problematic way.
Academic and Technical Fields
In physics, chemistry, and astronomy, the movement of particles and stars is described using this word. '電子の衝突' (electron collision) is a fundamental concept in electronics.

ニュース速報：国道1号線で、乗用車とバスが正面から衝突しました。(News flash: A passenger car and a bus collided head-on on Route 1.)

会議の音声：お互いの利益が衝突する点は、慎重に話し合いましょう。(Meeting audio: Let's carefully discuss the points where our interests clash.)

理科の授業：この実験では、二つの球が衝突する際のエネルギーを測定します。(Science class: In this experiment, we measure the energy when two spheres collide.)

歴史の教科書：東西の勢力がこの地域で衝突したことが、戦争のきっかけとなった。(The clash of Eastern and Western forces in this region triggered the war.)

スポーツ実況：選手同士が空中で激しく衝突しました！(Sports commentary: The players collided violently in mid-air!)

In daily life, you might hear a friend say, '親と衝突しちゃって...' (I had a clash with my parents...). This implies a heated argument or a period of cold war due to a fundamental disagreement. It suggests something more serious than a simple 'kenka' (fight), as it touches on the 'collision' of their lifestyles or values. Thus, hearing 'shoutotsu' in a social context often signals a need for empathy or intervention.

While 衝突する is a powerful word, learners often misuse it by applying it to situations where softer or more specific words are required. Japanese has several words for 'hitting' or 'clashing', and choosing the wrong one can change the severity or naturalness of your sentence.

Confusing with 'Butsukaru'
'Butsukaru' is the casual, everyday version. If you bump into someone on the street, say 'butsukaru'. Using 'shoutotsu' makes it sound like a major police-reported incident.
Misusing Particles
Learners often use 'を' (object particle). You cannot 'shoutotsu' an object; you 'shoutotsu' *with* or *into* it. Always use 'と' or 'に'.
Overusing for Minor Fights
If you had a small bicker with a friend about where to eat, 'shoutotsu' is too heavy. Use 'kenka' (fight) or 'ii-arasoi' (verbal spat) instead.

Incorrect: 道で知らない人と衝突しました。(Sounds like a violent crash.)
Correct: 道で知らない人とぶつかりました。(Casual bump.)

Incorrect: 壁を衝突しました。(Wrong particle.)
Correct: 壁に衝突しました。(Correct: Into the wall.)

Incorrect: 昨日は妻と衝突して、掃除をしませんでした。(Too dramatic for a chore dispute.)
Correct: 昨日は妻と口論になって... (We had a verbal argument.)

Incorrect: 予定が衝突するを直します。(Grammar error.)
Correct: 予定の衝突を解消します。(Resolving the schedule clash.)

Incorrect: ボールをバットに衝突させる。(Technically okay but unnatural.)
Correct: ボールをバットに当てる。(To hit/connect with the ball.)

Another mistake is using 'shoutotsu' when 'tairitsu' (対立 - opposition/confrontation) is better. 'Tairitsu' describes a long-term state of being against someone (like two political parties), whereas 'shoutotsu' is the specific moment or event where they actually fight or clash. Remember: 'shoutotsu' is an action/event; 'tairitsu' is often a state of being.

To truly master 衝突する, you must know its neighbors. Japanese has a rich vocabulary for impact and conflict, each with its own specific 'vibe' and application.

ぶつかる (Butsukaru)
The most common alternative. Used for physical bumping, meeting challenges, or casual disagreements. It is less formal than 'shoutotsu'.
激突する (Gekitotsu suru)
'Geki' means violent. This is a high-intensity version of 'shoutotsu'. Used for major car crashes or two top-tier sports teams facing off.
対立する (Tairitsu suru)
Used for 'opposition'. Two groups standing against each other. It doesn't necessarily imply a physical hit, but a structural conflict.
追突する (Tsuitotsu suru)
A specific traffic term meaning 'to rear-end'. If you hit the car in front of you, this is the precise word to use.
摩擦 (Masatsu)
Literally 'friction'. Used for 'trade friction' (boueki masatsu) or social tension that hasn't quite reached a full-blown 'shoutotsu'.

Comparison:
1. 意見が衝突する (Neutral/Formal: Opinions clash)
2. 意見がぶつかる (Casual: Opinions bump/clash)
3. 意見が対立する (Formal: Opinions are in opposition)

Comparison:
1. 車が衝突する (Standard: Cars collide)
2. 車が激突する (Dramatic: Cars crash violently)
3. 車が接触する (Minor: Cars make contact/scrape)

In summary, 'shoutotsu' is the 'Goldilocks' word for impact: more formal than 'butsukaru' but less extreme than 'gekitotsu'. It fits perfectly in professional and descriptive contexts where clarity and weight are required. By understanding these alternatives, you can fine-tune the intensity of your Japanese communication.

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Examples by Level

1

車と車が衝突しました。

A car and a car collided.

Simple subject + と + subject + が + verb.

2

あぶない！衝突するよ！

Watch out! You're going to collide!

Informal warning.

3

ボールが壁に衝突した。

The ball collided with the wall.

Using 'ni' for a stationary object.

4

衝突はこわいです。

Collisions are scary.

Using 'shoutotsu' as a noun.

5

自転車が衝突したニュースを見た。

I saw news that bicycles collided.

Relative clause.

6

ここで衝突しないでください。

Please do not collide here.

Negative request form.

7

二つのものが衝突する。

Two things collide.

Basic present tense.

8

ドーン！衝突した音です。

Boom! That's the sound of a collision.

Noun usage with 'desu'.

1

昨日、交差点でバスがトラックに衝突しました。

Yesterday, a bus collided with a truck at the intersection.

Specific location + de.

2

意見が衝突するのはよくあります。

It's common for opinions to clash.

Noun clause with 'no'.

3

予定が衝突して、パーティーに行けません。

My schedules clashed, so I can't go to the party.

Te-form for reason.

4

彼は壁に衝突して怪我をしました。

He collided with a wall and got injured.

Sequence of events.

5

鳥が窓に衝突するのを防ぎたい。

I want to prevent birds from colliding with the window.

Object of 'fusegu' (prevent).

6

このゲームでは、車が衝突するとポイントが減ります。

In this game, when cars collide, points decrease.

Conditional 'to'.

7

二人の考えが衝突して、喧嘩になった。

The two people's ideas clashed, and it became a fight.

Resultative 'ni naru'.

8

正面から衝突する事故はとても危険です。

Accidents that involve colliding from the front are very dangerous.

Adverbial 'shoumen kara'.

1

新しい法律をめぐって、与党と野党が衝突している。

The ruling and opposition parties are clashing over a new law.

'...wo megutte' (concerning/over).

2

仕事の予定とプライベートの予定が衝突してしまった。

My work schedule and private schedule ended up clashing.

Regretful 'te shimau'.

3

彼は上司と意見が衝突し、会社を辞めることにした。

He clashed with his boss's opinion and decided to quit the company.

Deciding 'koto ni shita'.

4

その船は氷山に衝突する危険があった。

The ship was in danger of colliding with an iceberg.

Noun 'kiken' modified by verb phrase.

5

感情が衝突しないように、言葉を選んで話した。

I chose my words carefully to avoid a clash of emotions.

'...youni' (so that/to avoid).

6

二つの文化が衝突する場所では、独自の伝統が生まれる。

In places where two cultures clash, unique traditions are born.

Place 'basho' modified by verb phrase.

7

サーバーの処理が衝突して、エラーが発生しました。

Server processes clashed, and an error occurred.

Technical context.

8

もし車が衝突しても、エアバッグがあなたを守ります。

Even if the car collides, the airbag will protect you.

Concessive 'temo'.

1

利害が衝突する場合、第三者の介入が必要になることがある。

When interests conflict, the intervention of a third party may become necessary.

Conditional 'baai'.

2

デモ隊と警察が衝突し、数名の負傷者が出た。

Protesters and police clashed, resulting in several injuries.

Stem form 'shoutotsu-shi' used as a conjunction.

3

個人の自由と公共の利益が衝突する問題は、解決が難しい。

Issues where individual freedom and public interest conflict are difficult to resolve.

Complex subject phrase.

4

銀河同士が衝突するプロセスは、何百万年もかかる。

The process of galaxies colliding takes millions of years.

Scientific 'process'.

5

彼は自分の信念と現実が衝突し、苦悩している。

He is suffering because his beliefs and reality are clashing.

Continuous state 'shite-iru'.

6

この地域では、宗教的な対立がしばしば武力衝突に発展する。

In this region, religious opposition often develops into armed clashes.

Developing into 'ni hatten suru'.

7

プログラムのコードが衝突しているため、修正が必要です。

Because the program codes are clashing, a fix is required.

Reason 'tame'.

8

二つの彗星が衝突する瞬間を観測することに成功した。

We succeeded in observing the moment two comets collided.

Succeeding in 'ni seikou suru'.

1

伝統的な価値観と近代化の波が激しく衝突している社会。

A society where traditional values and the wave of modernization are clashing fiercely.

Sociological description.

2

法理学において、二つの権利が衝突した際の優先順位が議論される。

In jurisprudence, the priority when two rights conflict is debated.

Academic 'sai' (when/upon).

3

粒子の衝突によって生じるエネルギーを計算する。

Calculate the energy generated by the collision of particles.

Causality 'ni yotte'.

4

国家間の利害が衝突し、外交交渉は決裂した。

Interests between nations clashed, and diplomatic negotiations broke down.

Formal 'ketsuretsu' (breakdown).

5

内的衝動と社会的規範が衝突する葛藤を描いた小説。

A novel depicting the conflict where internal impulses and social norms clash.

Literary 'kattou' (conflict/anguish).

6

市場の需要と供給の予測が衝突し、混乱を招いた。

Predictions of market demand and supply clashed, leading to confusion.

Leading to 'wo maneita'.

7

言語の壁と言語のアイデンティティが衝突する場面。

A scene where language barriers and language identity clash.

Abstract noun clash.

8

既存の権力構造と新興勢力が衝突するのは歴史の必然である。

It is a historical inevitability that existing power structures and emerging forces clash.

Philosophical 'hitsuzen' (inevitability).

1

パラダイムの衝突こそが、科学的進歩の原動力となる。

The clash of paradigms is precisely what becomes the driving force of scientific progress.

Emphatic 'koso'.

2

主権国家の法体系が衝突する際、国際私法が適用される。

When the legal systems of sovereign states conflict, private international law is applied.

Legal terminology.

3

自我と超自我が衝突する精神力動を分析する。

Analyze the psychodynamics where the ego and superego clash.

Psychological terminology.

4

文明の衝突という概念は、冷戦後の世界情勢を読み解く鍵となった。

The concept of the 'Clash of Civilizations' became a key to deciphering post-Cold War world affairs.

Referencing political theory.

5

高エネルギー物理学において、陽子同士を衝突させて新粒子を発見する。

In high-energy physics, protons are collided to discover new particles.

Causative form.

6

美学的な価値観の衝突が、前衛芸術の過激な表現を生んだ。

The clash of aesthetic values gave birth to the radical expressions of avant-garde art.

Art history context.

7

情報の非対称性が原因で、エージェント間の戦略が衝突する。

Strategic clashes between agents occur due to information asymmetry.

Economics/Game theory context.

8

悠久の時を経て、二つの大陸プレートが衝突し、山脈が形成された。

Over eternal time, two continental plates collided, and mountain ranges were formed.

Geological time scale.

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