実行する

The Japanese verb 実行する (じっこうする - jikkou suru) is a cornerstone of professional and formal Japanese communication. At its most fundamental level, it translates to "to execute," "to implement," or "to carry out." While the English word "do" (suru) is generic, 実行する specifically refers to the transition from a theoretical state—such as a plan, an idea, a command, or a piece of software code—into a tangible action or reality. It is the bridge between thinking and doing. In a business context, it is the word used when a strategy moves from the whiteboard to the field. In a technical context, it is the word for 'running' a program. Understanding this word requires recognizing the weight it carries; it implies a level of commitment and systematic follow-through that simpler verbs like 'yaru' (to do) lack.

Formal Implementation

Used when a government or corporation puts a new policy into effect. For example, 'The new tax law will be implemented next month' uses 実行する to denote the official start of the process.

Technical Execution

In computer science, this is the standard term for 'running' an application or executing a specific command string within a terminal.

Personal Resolve

When an individual follows through on a difficult promise or a New Year's resolution, showing 'execution power' (jikkouryoku).

The nuance of 実行する is deeply rooted in the kanji characters that compose it. The first character, 実 (jitsu), represents 'truth,' 'reality,' or 'fruit.' It suggests something becoming real or bearing fruit. The second character, 行 (kou), means 'to go,' 'to act,' or 'conduct.' Together, they literally mean 'to act towards reality.' This is why the word feels more significant than 'suru.' It isn't just an activity; it is the manifestation of a goal. In Japanese society, where meticulous planning (junbi) is highly valued, the act of 実行 (jikkou) is the final, decisive stage that validates all the preparation that came before it.

Culturally, 実行する is often contrasted with 'kuchisaki' (mouth-only/lip service). A person who talks a big game but never follows through is said to lack 'jikkou.' Therefore, using this word in a promise—'I will execute this plan'—carries a heavy weight of responsibility (sekinin). It is commonly found in news headlines regarding government policies, business reports regarding project milestones, and sports commentary regarding a team's ability to carry out a coach's strategy under pressure.

Synonym: 実施 (Jisshi)

While similar, 実施 is more often used for large-scale public events or tests (e.g., implementing an exam), whereas 実行 is more about the action of carrying out a specific plan or command.

Grammatically, 実行する is a 'suru-verb' (noun + suru). This means it functions as a transitive verb that typically takes a direct object followed by the particle を (o). The object being 'executed' is usually an abstract noun representing a plan, a decision, a command, or a process. Because it is a formal word, it is frequently used in its polite form 実行します (jikkou shimasu) or its humble/honorific forms in business settings. Understanding the level of formality is key to using it correctly without sounding overly stiff or accidentally casual.

Object + を + 実行する

The standard construction. Common objects include 計画 (keikaku - plan), 策 (saku - measure/strategy), and 命令 (meirei - order).

Passive Form: 実行される

Used when the focus is on the plan being carried out, rather than the person doing it. 'The plan was executed by the team.'

In daily conversation, while you might use 'yaru' for simple tasks like 'doing laundry,' you would switch to 実行する when discussing a serious life change or a professional project. It signals to the listener that the action is deliberate and significant. For example, if you decide to quit your job and start a business, the act of actually handing in the resignation is the 'jikkou' of your plan. It transforms the abstract desire into a concrete reality. This distinction is vital for learners who want to sound natural in different social strata.

When using the word in negative sentences, such as 実行しない (jikkou shinai), it often implies a failure of will or a strategic decision to hold back. It is not just that the action didn't happen, but that the *planned* action was not realized. This makes it a powerful word in critiques or performance reviews. 'The plan was good, but it wasn't executed' (計画は良かったが、実行されなかった) is a common way to express disappointment in a project's outcome.

Potential Form: 実行できる

Used to discuss feasibility. 'Is this plan actually executable/doable?' (この計画は本当に実行できますか？)

You will encounter 実行する in several distinct domains, each with its own flavor. In the corporate world, it is the language of the boardroom and the project management office. During quarterly reviews, managers will ask about the 'jikkou joukyou' (execution status) of various initiatives. It conveys a sense of professional accountability. If you are working in a Japanese office, you will see this word in emails, PowerPoint slides, and task management software like Asana or JIRA, where a 'Completed' status might be described as '実行済み' (jikkou-zumi).

The Tech Sector

Software developers use this word daily. 'Execute the script,' 'Run the binary,' and 'Runtime error' (実行時エラー) all utilize this term. It is the literal translation of the 'Execute' function in computing.

Government and News

News anchors use it when reporting on the implementation of laws, the carrying out of judicial sentences, or the execution of military orders. It sounds authoritative and objective.

In the realm of self-improvement and sports, 実行する is used to distinguish between those who dream and those who achieve. Motivational speakers in Japan often emphasize 'jikkou' as the key to success. You might hear a coach tell their players, 'Regardless of the strategy, if you don't execute it on the field, it's meaningless' (どんな作戦も、コート上で実行しなければ意味がない). This usage highlights the physical and mental effort required to transform a concept into an action.

Finally, in everyday Japanese life, you might see this word on the screen of an ATM or a vending machine. When you confirm a transaction, the button might say '実行' (Execute/Confirm). This familiarizes even non-business people with the word as a synonym for 'proceed' or 'go ahead with the requested action.' It is a word that spans from the highest levels of government to the simple act of withdrawing cash from a machine.

Common Collocation: 実行に移す

Meaning 'to put into practice.' Example: 'I will put my ideas into practice' (考えを実行に移す).

One of the most frequent mistakes English speakers make is overusing 実行する as a direct translation for any instance of 'to do' or 'to carry out.' Because 実行する is quite formal and specific, using it for mundane tasks like 'doing homework' or 'doing the dishes' sounds bizarre and overly dramatic to native ears. For those tasks, やる (yaru) or する (suru) is much more appropriate. Think of 実行する as a 'heavy' word—only use it when there is a clear plan or command being realized.

Mistake: Mixing up 実行 (Jikkou) and 実施 (Jisshi)

Learners often use these interchangeably. While 実行 is 'execution' (carrying out a plan/order), 実施 is more like 'implementation' in a systemic or public sense (like holding an event or applying a rule). You 'jikkou' an order, but you 'jisshi' a survey.

Mistake: Confusing with 行う (Okonau)

行う means 'to conduct' or 'to hold.' It is used for ceremonies, experiments, or meetings. 実行 focuses on the 'follow-through' of a specific plan, whereas 行う is just the act of holding the event.

Another common error is failing to use the correct particle. Since 実行する is a transitive verb, it almost always requires the particle を (o). Some learners mistakenly use に (ni) because they are thinking of 'moving into action' (実行に移す), but if you are just 'executing a plan,' を is the only choice. Additionally, ensure you don't confuse the noun 実行 (jikkou) with 実況 (jikkyou), which means 'live broadcast' (as in 'gameplay commentary'). Mispronouncing the long 'o' or the double 'k' can lead to funny misunderstandings!

Lastly, be careful with the context of 'execution' in the sense of capital punishment. While 実行する can be used for 'carrying out' a sentence (死刑を執行する - shikei o shikkou suru), the specific legal term for executing a person is 執行 (shikkou), not 実行. Using the wrong 'shikkou/jikkou' in a legal context can sound unprofessional. Always remember that 実行 is about 'doing the thing that was planned.'

Japanese has a rich vocabulary for 'doing' things, and choosing the right synonym for 実行する depends entirely on the nuance you wish to convey. While 実行する is the most versatile term for executing a plan, other words offer more specific meanings regarding the scale, the legal status, or the completeness of the action. Understanding these subtle differences will elevate your Japanese from functional to nuanced.

実施する (Jisshi suru)

Best for 'implementing' systems, rules, or large-scale events. Example: 'Implementing a new law' (法律を実施する). It implies a broader scope than a single action.

遂行する (Suikou suru)

Means 'to carry out to completion' or 'to accomplish a mission.' It is even more formal than 実行 and often used for duties or long-term missions. Example: 'Fulfilling one's duties' (任務を遂行する).

履行する (Rikou suru)

A legal term meaning 'to fulfill' or 'to perform' a contract or obligation. Example: 'Fulfilling a contract' (契約を履行する).

If you are looking for something less formal, you might use 実践する (jissen suru). This word means 'to put into practice' in the sense of applying a theory or a philosophy to your daily life. For instance, if you learn a new health tip and actually start doing it, you are jissen-ing it. It has a more personal, self-improvement feel compared to the professional tone of jikkou. On the other hand, 執行する (shikkou suru) is strictly for the enforcement of laws or the execution of administrative tasks.

Finally, don't forget the simplest alternative: 行う (okonau). While 実行する emphasizes the link between a plan and its realization, 行う is a broad, formal word for 'doing' or 'conducting.' If you just want to say that a meeting or a survey 'took place,' 行う is your safest bet. It is less 'charged' than 実行する and fits a wider variety of contexts without implying a specific strategic execution.

Quick Summary Table

1. 実行: Focus on Plan -> Action. 2. 実施: Focus on System/Publicity. 3. 遂行: Focus on Completion/Duty. 4. 実践: Focus on Theory -> Practice.