付く

The Japanese verb 付く (tsuku) is a remarkably versatile intransitive verb that every student of Japanese must master early in their journey. At its most fundamental level, it describes the state of one thing becoming attached to, connected with, or appearing upon another. Unlike its transitive counterpart, 付ける (tsukeru), which implies an active agent doing the attaching, 付く focuses on the result or the natural occurrence of the attachment. This makes it essential for describing everything from physical objects sticking together to the abstract acquisition of skills or the functioning of electrical appliances.

Physical Attachment

This is the most literal use. Imagine a stamp on an envelope, a price tag on a shirt, or mud on your shoes. In these cases, the object is physically joined to the surface. For example, if you say 'shatsu ni gomi ga tsuite iru,' you are observing that there is some lint or trash currently attached to the shirt. The focus is on the current state of being attached.

Electrical and Functional States

One of the most common daily uses of 付く is to describe lights or electronic devices turning on. When you walk into a room and the light is already on, or when you flip a switch and the bulb illuminates, you use this verb. It implies that the 'state of power' has successfully connected or attached to the device. Similarly, it is used for heaters (danbo) or air conditioners (reibo) when they start running.

Beyond physical and electrical contexts, 付く extends into the realm of abstract qualities and human conditions. When you gain confidence, Japanese speakers say 'jishin ga tsuku' (confidence attaches to you). When you acquire a new skill through practice, it is 'gijutsu ga tsuku.' Even in the culinary world, when a dish has a specific flavor or aroma, we say 'aji ga tsuku' (flavor is attached/added). This conceptual framework of 'attachment' allows the verb to cover a vast array of meanings that, in English, would require many different verbs like 'gain,' 'acquire,' 'turn on,' 'stick,' or 'stain.'

Abstract Acquisition

This usage is vital for discussing personal growth. Whether it is 'chikara ga tsuku' (gaining strength/ability) or 'chie ga tsuku' (gaining wisdom), the idea is that these qualities have become a part of the person, effectively 'attaching' to their character or capability set.

In summary, 付く is a 'state-change' or 'result-oriented' verb. It describes the moment or the condition of something being joined to something else, whether that join is physical, electrical, or purely conceptual. Its frequency in daily conversation is extremely high, making it a cornerstone of natural Japanese speech.

Using 付く (tsuku) correctly requires an understanding of its intransitive nature and the specific particles that accompany it. Because it is an intransitive verb (jidoushi), the focus is on the subject undergoing the change or existing in a state, rather than an actor performing an action on an object. The most common sentence pattern is [Noun] が 付く. This structure is used to indicate that the noun has become attached or has turned on.

Describing Locations of Attachment

When you want to specify where something is attached, you use the particle に (ni) to mark the location. The pattern becomes [Location] に [Subject] が 付く. For example, 'fuku ni nioi ga tsuku' means 'a smell gets onto the clothes.' Here, the clothes are the location where the smell (the subject) has attached itself.

The verb is frequently used in its -te iru form (付いている - tsuite iru) to describe a continuous state. If a button is currently on a shirt, you say 'botan ga tsuite iru.' If a light is currently on, you say 'denki ga tsuite iru.' This distinction between the moment of attachment (付く) and the resulting state (付いている) is crucial for accurate description. In many cases, when you observe something in the present, you will use the -te iru form.

Functional Use with Appliances

When talking about machines or lights, 付く describes the transition from 'off' to 'on.' If you are waiting for a computer to boot up or a heater to start, you might say 'yoyaku tsuita' (it finally turned on). In a question, you might ask 'terebi, tsuiteru?' (Is the TV on?).

Another important grammatical context is the use of 付く with abstract nouns to describe gaining attributes. Common pairings include 自信が付く (jishin ga tsuku) - to gain confidence, 力が付く (chikara ga tsuku) - to gain strength/proficiency, and 身に付く (mi ni tsuku) - to master a skill or habit (literally 'to attach to the body'). These are fixed expressions that should be learned as single units of meaning.

Idiomatic and Abstract Patterns

In more advanced contexts, 付く appears in idioms like 'ki ga tsuku' (to notice) or 'me ni tsuku' (to catch one's eye). These patterns use the verb to describe a thought or a visual perception 'attaching' itself to one's consciousness.

Finally, consider the use of 付く in the context of food. When a flavor permeates an ingredient, we say 'aji ga tsuku.' If you are marinating meat, you might say 'aji ga yoku tsuita' (the flavor has soaked in well). This reinforces the idea of an external quality becoming an inseparable part of the subject.

The verb 付く (tsuku) is ubiquitous in Japanese daily life, appearing in households, workplaces, and public spaces. Because it covers so many fundamental concepts—attachment, activation, and acquisition—you will hear it in various registers and situations. Understanding these contexts will help you recognize the specific nuance intended by the speaker.

In the Home

In a domestic setting, 付く is most frequently heard regarding chores and appliances. A parent might tell a child, 'fuku ni gomi ga tsuiteru yo' (There's some lint on your clothes). When someone enters a dark room, they might ask, 'denki tsuiteru?' (Is the light on?). During meal preparation, you might hear 'aji ga tsuita ka na?' (I wonder if the flavor has set in?). It is also used for stains: 'shoyu ga tsuichatta!' (Oh no, soy sauce got on it!).

At the Workplace

In a professional environment, 付く often relates to documents, details, and skills. A manager might say, 'shiryou ni sankou bunken ga tsuite imasu' (References are attached to the document). When discussing a new employee's progress, they might say, 'shigoto no yotsu ga tsuite kita' (He's starting to get the hang of the job). The phrase 'ki ga tsuku' (to notice/be attentive) is highly valued in Japanese work culture, describing someone who notices small details or the needs of others.

In public spaces, you will hear 付く in announcements and see it on signage. On a train, an announcement might say 'tsugi no densha ni wa guriin-sha ga tsuite imasu' (The next train has a Green Car attached). In a parking lot, a sign might say 'sen-en ijou no kaimono de chuushaken ga tsukimasu' (A parking ticket is provided with a purchase of 1,000 yen or more). These uses emphasize the 'inclusion' or 'attachment' of a benefit or a physical component.

Social and Interpersonal Contexts

When people talk about relationships or following others, 付く is used to show companionship. 'Ato o tsuku' means to follow behind someone. In sports or competitions, 'sa ga tsuku' means a gap (in score or distance) has opened up between competitors. This variety shows that 付く is not just about physical glue, but about any form of connection or differentiation that 'sticks' in a given context.

Finally, in media like anime or drama, you'll often hear characters use 付く in emotional or dramatic ways. 'Ketchaku ga tsuku' (to reach a conclusion/settlement) is a common phrase in battle shonen or legal dramas. 'Me-do ga tsuku' (to see a light at the end of the tunnel/have a prospect of completion) is used when a difficult task finally shows signs of finishing. These idiomatic uses are part of the 'color' of the Japanese language that 付く provides.

The verb 付く (tsuku) presents several challenges for English speakers, primarily due to its transitivity, its many homophones, and its broad range of meanings that don't always map one-to-one with English verbs. Avoiding these common pitfalls will significantly improve the naturalness of your Japanese.

Confusing Transitivity (付く vs. 付ける)

The most frequent error is using 付く when you should use 付ける (tsukeru). Remember: 付く is intransitive (the thing does it itself or is in that state), while 付ける is transitive (you do it to the thing). You cannot say 'watashi wa denki ga tsuita' to mean 'I turned on the light.' You must say 'watashi wa denki o tsuketa.' Conversely, if the light is already on, you say 'denki ga tsuite iru,' not 'denki o tsukete iru' (unless you are actively holding the switch).

Homophone Confusion (付く vs. 着く vs. 突く)

The sound 'tsuku' can be written with several different kanji, each with a distinct meaning. 付く means to attach/turn on. 着く means to arrive (e.g., eki ni tsuku). 突く means to poke, stab, or strike (e.g., tsue o tsuku - to use a cane). While they sound identical, using the wrong kanji in writing is a major mistake. Always check the context: if it's about arrival, use 着; if it's about attachment, use 付.

Another mistake involves the misuse of particles with 付く. When something is attached *to* something else, the destination is marked with に (ni), not で (de). For example, 'kabe ni e ga tsuite iru' (A picture is on the wall). Using 'kabe de' would imply the action of attaching is happening at the wall, but since 付く is a state/result, に is the correct particle to indicate the point of contact.

Over-reliance on 'Turn On'

While 付く is used for lights and heaters, it is NOT used for turning on water (faucets) or opening things like books or umbrellas. For water, you use 出す (dasu) or ひねる (hineru). For books, you use 開く (hiraku). Learners often try to use 付く/付ける for everything that 'starts,' but its range is limited to electrical/combustion items and physical attachments.

Finally, be careful with the phrase 'ki ga tsuku.' While it means 'to notice,' it is often confused with 'ki o tsukeru' (to be careful). 'Ki ga tsuku' is a spontaneous realization, while 'ki o tsukeru' is a conscious effort to be cautious. Using one for the other can change the meaning of your sentence from 'I noticed the car' to 'I was careful of the car.'

Because 付く (tsuku) is so broad, Japanese has many more specific verbs that can be used depending on the context. Using these alternatives can make your Japanese sound more precise and sophisticated. Below is a comparison of 付く with its common synonyms and related terms.

付く vs. 張り付く (haritsuku)

付く is a general term for attachment. 張り付く specifically means to be stuck or pasted onto a surface, like a sticker, a poster, or even a wet shirt sticking to skin. It implies a flat, surface-to-surface contact that might be difficult to peel off.

付く vs. 付属する (fuzoku suru)

付く is used in daily conversation for things being included (like a toy with a meal). 付属する is a more formal, academic, or technical term meaning 'to be attached' or 'to be an accessory to.' You would see this in a manual: 'Accessories attached to the main unit' (hontai ni fuzoku suru buhin).

付く vs. 点灯する (tentou suru)

While 付く is the standard way to say a light turns on, 点灯する is the technical or formal equivalent. You might see 'tentou' on a control panel or in a news report about city lights. In casual speech, 付く is always preferred.

付く vs. 加わる (kuwawaru)

When talking about things being added, 付く implies an attachment or inclusion. 加わる means to join or be added to a group or a sum. For example, if a new member joins a team, you use 加わる. If a bonus is added to a salary, you could use either, but 付く emphasizes the bonus 'attaching' to the base pay.

In the context of 'noticing,' 気が付く (ki ga tsuku) is the most common. However, 覚る (satoru) means to realize or perceive a hidden truth, and 認識する (ninshiki suru) means to formally recognize or identify something. 気が付く remains the best choice for everyday 'Oh, I just noticed!' moments.

付く vs. 染みる (shimiru)

When a liquid gets on fabric, 付く means it is there. 染みる means it has soaked in or permeated the fibers. If you spill wine, it first 付く (gets on the shirt) and then 染みる (soaks in and becomes a deep stain).

By learning these distinctions, you can choose the word that perfectly fits the physical or abstract situation you are describing. While 付く is a safe 'all-purpose' verb, these alternatives add depth to your vocabulary.