動く

The Japanese verb 動く (ugoku) is a fundamental word that every learner encounters early in their journey, yet its depth and versatility often surprise students as they progress to higher levels. At its most basic level, it translates to "to move" or "to be in motion." However, unlike the English word "move," which can be both transitive (I move the chair) and intransitive (The chair moves), ugoku is strictly intransitive. This means it describes the action of the subject itself moving, rather than someone moving an object. If you want to say you are moving something, you would use its transitive counterpart, ugokasu.

Physical Displacement

This is the most common usage. It refers to any physical object or living being changing its position in space. For example, a person walking, a car driving down the street, or a leaf fluttering in the wind all involve the verb ugoku. It captures the essence of kinetic energy and visible change in location.

Mechanical Functioning

Beyond simple physical movement, ugoku is the standard verb used to describe whether a machine, device, or system is working or operational. If your watch is ticking, it is ugoite iru. If your computer is frozen and won't respond to commands, you might say it is ugokanai (not moving/working). This is a crucial distinction for English speakers who might be tempted to use hataraku (to work), which is generally reserved for people doing labor.

In more abstract contexts, ugoku refers to the movement of emotions, social trends, or political situations. When someone's heart is "moved" by a beautiful story, the verb used is ugoku. Similarly, when the stock market shifts or a political party takes action, ugoku is the verb of choice. It implies a shift from a state of stillness or stagnation into a state of activity or change. Understanding this transition from the physical to the metaphorical is key to mastering the word.

Taking Action

Finally, ugoku is used to describe the act of taking initiative or making a move in a situation. If a project has been stalled and someone finally does something to progress it, they are said to have "moved." This usage is common in business and strategic contexts, where "making a move" is synonymous with ugoku.

Using 動く (ugoku) correctly requires a solid grasp of Japanese particles and verb transitivity. As an intransitive verb (自動詞 - jidoushi), the subject of the sentence is the thing that is moving. The most common particle used with ugoku is が (ga), which marks the subject. You will rarely see ugoku used with the object particle を (o), unless it is indicating the space through which something moves (e.g., michi o ugoku - to move along a road, though michi o aruku is more common).

The 'Subject ga Ugoku' Pattern

This is the bread and butter of using this verb. Whether it's a person, an animal, or an inanimate object like a machine, the pattern remains the same. The focus is entirely on the entity performing the movement or the state of being in motion.

When describing a machine that is functioning, ugoku is often used in its continuous form ~te iru to show that it is currently in an operational state. Conversely, the negative form ugokanai is frequently used to express frustration when a device fails to start or respond. This is particularly common with computers, smartphones, and household appliances.

Metaphorical and Social Movement

When using ugoku for abstract concepts, the particle に (ni) often marks the cause or the stimulus that prompted the movement. For instance, being moved by a movie (eiga ni kokoro ga ugoku) or acting in response to a situation (joukyou ni awasete ugoku).

Grammatically, ugoku is a Godan verb. Its potential form is ugokeru (can move), which is often used when discussing physical ability or freedom of movement. For example, karada ga ugokenai (I can't move my body) might be used when one is paralyzed, stuck, or simply too tired to get out of bed. The causative form ugokaseru (can make something move) is also common but belongs to the transitive family.

Common Conjugations

Polite: Ugokimasu. Negative: Ugokanai. Past: Ugoita. Te-form: Ugoite. Conditional: Ugokeba. Volitional: Ugokou.

The verb 動く (ugoku) is omnipresent in Japanese daily life, appearing in contexts ranging from the mundane to the highly technical. Because it covers both physical movement and mechanical operation, you will hear it in almost every environment you find yourself in in Japan.

Public Transportation

In train stations and on buses, announcements often use ugoku. When a train is about to depart, you might hear warnings about the train moving. If there is a delay, the staff might explain that the trains are not currently "moving" (running). In elevators, you'll see signs or hear voices saying the elevator is moving up or down.

The Workplace and IT

In an office setting, ugoku is the go-to word for software and hardware. If a program is running, it's ugoite iru. If a printer is jammed and won't start, it's ugokanai. Software developers use ugoku to describe code that executes correctly. A common phrase among programmers is "Kore, ugoita!" (It worked! / It ran!).

Sports and Physical Activity

Coaches and PE teachers constantly shout "Ugoite!" (Move!) to encourage students to be more active. In sports commentary, you'll hear ugoku to describe a player's agility or a team's formation changes. It's also used in health contexts, like "karada o ugokasu" (to move one's body/exercise), though here it's the transitive form.

In news and media, ugoku is used for large-scale events. "Sekai ga ugoku" (The world moves) is a common headline for major geopolitical shifts. In weather reports, you might hear about how a typhoon is "moving" across the ocean. Even in the world of art and entertainment, a "moving" performance uses the same verb to describe the emotional impact on the audience.

While 動く (ugoku) seems straightforward, English speakers often fall into several traps due to the differences in how "move" and "work" are used in both languages. Understanding these nuances is essential for sounding natural in Japanese.

Intransitive vs. Transitive Confusion

The most frequent error is using ugoku when you should use ugokasu. Remember: ugoku is for when the subject moves on its own. Ugokasu is for when you (or something else) move an object. You cannot say "Watashi wa isu o ugoku" (I move the chair). It must be "Watashi wa isu o ugokasu."

'Ugoku' vs. 'Hataraku' (Working)

In English, we say "My brother works at a bank" and "My watch works well." In Japanese, these are two different verbs. Hataraku is for people working a job. Ugoku is for machines or systems functioning. Never say "Watashi no tokei ga hataraku" unless you mean your watch has a job and gets a salary!

'Ugoku' vs. 'Hikkosu' (Moving House)

When you move to a new house or apartment, English uses "move." Japanese uses a specific verb: hikkosu. Using ugoku in this context sounds like you are physically shifting your body around inside your house, rather than changing your place of residence.

Another subtle mistake is using ugoku for "to travel" or "to go." While traveling involves movement, ugoku focuses on the physical act of motion or the functioning of the transport. If you want to say you are going somewhere, use iku. If you want to say you are traveling, use ryokou suru. Ugoku is too mechanical for these human experiences.

Japanese has many words for movement, each with its own specific nuance. Choosing the right one depends on what is moving, how it's moving, and the context of the action. Here is a comparison of 動く (ugoku) with its closest synonyms.

動く (Ugoku) vs. 移動する (Idou suru)

Ugoku is a general term for any kind of motion, including staying in one spot but moving (like a clock's hands). Idou suru specifically means to move from Point A to Point B. It is more formal and often used in logistics, science, or when discussing moving groups of people.

動く (Ugoku) vs. 作動する (Sadou suru)

While ugoku can mean a machine is working, sadou suru is the technical term for "to operate" or "to function." You'll see sadou in manuals or technical reports. Ugoku is much more common in daily conversation.

動く (Ugoku) vs. 揺れる (Yureru)

Yureru means to shake, sway, or vibrate. While ugoku is general, yureru describes a specific back-and-forth or unstable motion. During an earthquake, the ground yureru. A boat on the waves yureru.

動く (Ugoku) vs. 振る (Furu)

Furu is a transitive verb meaning to wave or shake something. You furu your hand to say goodbye or furu a bottle of juice. Ugoku is the result (the hand moves), but furu is the specific action of waving.

In summary, while ugoku is the most versatile and common verb for movement, being aware of these alternatives will help you describe motion with much greater precision. Use idou for travel, sadou for technical operation, yureru for shaking, and furu for waving.