なおす

The Japanese verb なおす (naosu) is a versatile and essential word that every Japanese learner must master early on. Primarily categorized under the CEFR A2 level, its fundamental meaning revolves around the concept of 'returning something to its original, correct, or better state.' Whether you are dealing with a broken mechanical device, a grammatical error in a sentence, or even a bad mood, naosu is the go-to verb for 'fixing' or 'correcting' the situation. The word is most commonly written with the kanji 直す, which carries the connotation of 'straightening' or 'repairing.' Understanding the breadth of this verb requires looking at it not just as a translation for 'repair,' but as a broader restorative action. In Japanese culture, there is a deep appreciation for things that are well-maintained, and naosu embodies the active effort to maintain order and functionality in one's environment.

Physical Repair

Used for fixing tangible objects like bicycles, clocks, computers, or furniture. If it was working and now it isn't, you use なおす to describe the act of repairing it.

Abstract Correction

Used for correcting mistakes in writing, speech, or calculations. When a teacher marks a student's homework, they are performing the act of なおす on the errors.

Restoring State

Used in phrases like きげんをなおす (to fix one's mood) or 姿勢をなおす (to correct one's posture). It implies bringing something back to a desirable baseline.

One of the most important linguistic nuances to grasp is the difference between 直す (to fix/correct) and its homophone 治す (to cure/heal). While they are both pronounced naosu, the latter is used specifically for medical contexts, such as curing a disease or healing an injury. In daily conversation, if you speak without kanji, the context usually makes it clear which one you mean, but in writing, the distinction is vital. Furthermore, naosu is a transitive verb, meaning it requires a direct object marked by the particle を (o). You perform the action of fixing on something. This contrasts with the intransitive version, なおる (naoru), which means 'to be fixed' or 'to get better' on its own. For example, you naosu the car, but the car naoru.

In a social sense, naosu is often used when apologizing or acknowledging a mistake. If you say something rude, you might try to 'fix' the atmosphere. If you make a typo in an email, you quickly send a 'corrected' version. It is a word of resolution and improvement. It is also used in the Kansai dialect in a very specific way: to 'put something away.' If a person from Osaka tells you to なおして the chairs, they might mean 'put them back where they belong,' which can be confusing for speakers of standard Japanese who might think they need to repair the chairs!

Using なおす (naosu) correctly involves understanding its grammatical structure as a transitive verb. In the standard Subject-Object-Verb (SOV) pattern of Japanese, the thing being fixed is followed by the particle を (o). Because it is a Group 1 (u-verb), its conjugations follow the standard pattern: なおします (polite), なおさない (negative), なおした (past), and なおせば (conditional). Mastery of these forms allows you to express a wide range of intentions, from asking for help with a repair to promising to correct a mistake.

Direct Object Construction

[Object] を なおす. This is the most basic form. Example: 間違いを直す (To correct a mistake).

Compound Verb Usage

[Verb Stem] + なおす. This indicates doing an action again to improve or fix the result. Example: やり直す (To do over/start over).

Benefactive Construction

[Verb te-form] + もらう/くれる. Used when someone fixes something for you. Example: 直してもらう (To have something fixed by someone).

When using naosu in a professional context, such as reporting a bug in software or a flaw in a product, it is common to use the more formal noun version 修正 (shūsei) or 修理 (shūri) followed by する. However, naosu remains the versatile choice for spoken communication. For instance, if you are at a repair shop, you might say 「これをなおせますか？」 (Can you fix this?). If you are talking to a friend about a misunderstanding, you might say 「仲をなおしたい」 (I want to fix our relationship/make up).

Another interesting usage is 'translating' into Japanese. While 翻訳する (hon'yaku suru) is the technical term, 日本語に直す (Nihongo ni naosu) is a very common way to say 'put this into Japanese' or 'correct this into Japanese form.' It suggests that the original language is a 'state' that needs to be converted into the 'correct' (Japanese) state for the current context. This highlights the restorative nuance of the word—bringing something to where it 'should' be.

In Japan, you will encounter なおす (naosu) in a multitude of everyday scenarios. From the classroom to the tech office, and from the doctor's office to the kitchen, it is a ubiquitous part of the linguistic landscape. Because it covers both physical repair and intellectual correction, its frequency is incredibly high. In a school setting, teachers constantly use it when handing back papers: 「赤ペンでなおしてください」 (Please correct it with a red pen). In a household, parents might use it when a child breaks a toy: 「お父さんに直してもらおう」 (Let's have Dad fix it).

Customer Service

At a shoe repair shop (靴修理) or an iPhone repair counter, you'll hear staff discuss the time and cost required to なおす the item.

Medical Settings

Doctors use 治す to talk about curing illnesses. A patient might ask, 「この病気は治りますか？」 (Can this illness be cured?), and the doctor responds with how they will 治す it.

Daily Life & Habits

Used when talking about breaking bad habits. 「悪い癖をなおしたい」 (I want to fix/correct my bad habits).

You will also hear naosu in compound forms in media and literature. The phrase 「やり直す」 (yarinaosu), meaning 'to start over' or 'to try again,' is a common trope in dramas and anime, often used when a character wants a second chance at life or a relationship. In the workplace, 「見直す」 (minaosu) is used when reviewing a plan or looking at something again to find errors or areas for improvement. This shows that naosu is not just about fixing what is 'broken' but also about refining what is 'imperfect.'

Lastly, in the digital age, naosu is used for 'fixing' digital files, correcting code, or updating information. If you post something on social media and realize there is a mistake, you might comment, 「あとでなおします」 (I'll fix it later). It is a word that adapts to the technology of the time, maintaining its core meaning of restoration and correction regardless of the medium.

One of the primary hurdles for English speakers learning なおす (naosu) is the distinction between transitivity and intransitivity. English often uses the same word 'fix' for both 'I fixed the car' and 'The car fixed itself' (though we usually say 'The car is fixed'). In Japanese, these are two different verbs: なおす (transitive - you do it) and なおる (intransitive - it happens). Confusing these two is the most common error. If you say 「時計がなおした」, it sounds like the clock itself performed a repair on something else, which is nonsensical.

Transitive vs. Intransitive

Mistake: 風邪がなおした (I fixed the cold). Correct: 風邪がなおった (The cold got better) or 風邪をなおした (I cured the cold).

Kanji Confusion

Using 直す (repair) for a disease or 治す (cure) for a broken chair. While they sound the same, using the wrong kanji in writing is a significant orthographic error.

Overusing 'Naosu' for Formal Repair

While なおす is fine for daily life, in a business report, using 修理 (shūri) or 修正 (shūsei) is more appropriate and professional.

Another mistake involves the regional usage mentioned previously. If you are in Tokyo and tell someone to 「靴をなおしてください」, they will look for a hole in your shoe to repair. If you meant 'Please put your shoes away in the cabinet,' you should use 片付ける (katazukeru) or しまう (shimau). Conversely, if you are in Osaka, using naosu to mean 'put away' is perfectly natural, but you must be aware that this does not translate to standard Japanese (Hyōjungo) in the same way.

Lastly, learners sometimes confuse naosu with tsukuru (to make). If you are 'fixing' a meal that went wrong, you might naosu the seasoning, but you tsukuru the dish. Naosu always implies a pre-existing state that was flawed or broken. You cannot 'fix' something that doesn't exist yet. Ensure the context involves a restoration rather than a creation.

Japanese has several words that overlap with なおす (naosu), each with specific nuances and registers. Choosing the right one depends on what you are fixing and how formal the situation is. While naosu is the general-purpose 'umbrella' verb, more specific terms can make your Japanese sound more precise and natural.

修理 (Shūri) - Repair

Specifically for mechanical or technical items like cars, appliances, or watches. It sounds more professional than なおす. Usage: 修理に出す (to send for repair).

修正 (Shūsei) - Amendment/Correction

Used for data, documents, schedules, or photos. You 'amend' a plan or 'touch up' a photo using 修正. It is common in business and IT.

訂正 (Teisei) - Correction of Errors

Used specifically for correcting mistakes in words or numbers. If you said the wrong date, you would say 「訂正します」 (I correct myself).

改善 (Kaizen) - Improvement

While not strictly 'fixing,' kaizen is about making a system or process better. It is a key concept in Japanese business philosophy.

Comparing naosu with 整える (totonoeru) is also useful. Totonoeru means 'to tidy up' or 'to put in order.' If your hair is messy, you totonoeru it. If your hair is cut badly and you want to 'fix' the style, you naosu it. The former is about organization, while the latter is about correcting a flaw. Similarly, 改める (aratameru) means to reform or renew, often used for habits or formal systems, carrying a much heavier and more serious tone than the everyday naosu.

Understanding these alternatives allows you to navigate different social levels. In a casual chat with a friend, naosu is almost always the right choice. In an office, knowing when to say shūsei or teisei will demonstrate a higher level of professional Japanese proficiency. However, naosu remains the foundational verb from which all these specialized concepts grow.