間違っている

The Japanese verb 間違っている (machigatte iru) is the continuous or state-of-being form of the verb 間違う (machigau). While the base verb 間違う focuses on the act of making a mistake or committing an error, the form 間違っている describes the current state of something being incorrect, inaccurate, or false. In English, we often translate this simply as "is wrong" or "is incorrect." It is a fundamental term used across all levels of Japanese communication, from correcting a simple math problem to debating complex philosophical or moral truths. Understanding this word requires a grasp of the ~te iru grammar, which here indicates a resulting state that persists. If a sign has the wrong name on it, the sign is currently in a state of being wrong.

Core Meaning

The state of deviating from the truth, fact, or a standard of correctness.

In a broader sense, 間違っている can also apply to behavior or ways of thinking. When someone says "Your way of thinking is wrong" (考え方が間違っている), they are not just saying you made a one-time slip-up, but that the entire framework of your logic is currently flawed. This makes it a powerful and sometimes confrontational phrase. In Japanese culture, where harmony (wa) is valued, telling someone directly that they are wrong can be quite harsh. Therefore, you will often see it softened with markers like ~to omoimasu (I think) or kamo shirenai (might be). It is also important to distinguish this from 違う (chigau), which means "to differ" or "to be different," though in many contexts, chigau is used as a softer way to say "that's wrong."

Grammatical Nuance

The ~te iru form indicates a state resulting from a past action. The mistake happened, and now the situation is 'wrong'.

When analyzing the word's components, 間 (ma) refers to space or interval, and 違う (chigau) refers to crossing or differing. Historically, it implies that the "interval" or "timing" has crossed or gone awry. In modern usage, this etymological root is less conscious, but it helps explain why the word covers everything from being late (timing) to being factually incorrect. In professional settings, you might encounter the more formal 相違している (soui shite iru) or 誤りがある (ayamari ga aru), but 間違っている remains the most versatile and commonly used expression for error in daily life.

Social Context

Using this word towards a superior can be seen as impolite. Instead, use phrases like 'Is it possible there is a mistake?' (o-machigai de wa nai deshou ka?).

Using 間違っている effectively requires understanding its grammatical placement and its level of directness. As a verb in the te-iru form, it functions as an adjective-like predicate. You can use it to modify nouns directly, such as 間違っている答え (machigatte iru kotae)—"the answer that is wrong." However, it is most frequently used at the end of a sentence to state a fact about a subject. Because it is a verb, it conjugates for politeness: 間違っています (machigatte imasu) is the standard polite form, while 間違っている (machigatte iru) is the plain form used with friends or in writing.

Sentence Structure

[Subject] + が/は + 間違っている。 (The [Subject] is wrong.)

One of the most common points of confusion for learners is when to use 間違っている versus 間違えた (machigaeta). Use 間違えた when you want to say "I made a mistake" (an action). For example, "I took the wrong bus" would be バスを間違えた. Use 間違っている when you are looking at a situation and describing its current state of being incorrect. If you look at a clock that shows 5:00 when it's actually 4:00, you say 時計が間違っている. It is about the status of the object, not the act of the person.

Common Subjects

Commonly used with: 答え (answer), 番号 (number), 漢字 (kanji), 方向 (direction), 考え (thought), 選択 (choice).

In terms of register, 間違っている is neutral. However, in highly formal business Japanese, you might avoid it when talking to a client. Instead of saying "Your document is wrong," which is very direct and potentially offensive, a Japanese professional would say 「こちらの書類に、少々相違点があるかと存じます」 (I believe there may be some points of difference in this document). This highlights the importance of context; while 間違っている is grammatically correct, its social weight can be heavy. In a classroom or among peers, it is perfectly acceptable for pointing out factual errors.

Negative Form

間違っていない (machigatte inai) - Not wrong / Correct.

You will encounter 間違っている in a wide variety of daily situations. In an educational setting, teachers use it to correct students' work. For example, during a math lesson, a teacher might point to the blackboard and say, 「ここが間違っていますね」 (This part is wrong, isn't it?). In this context, it is a helpful, instructional term. Similarly, when learning Japanese, your tutor might use it to point out a grammatical error or a mispronounced word. It is the standard way to identify a factual lapse in a learning environment.

The Workplace

Used when checking reports, data entry, or schedules. 'The date on this invoice is wrong.'

In daily life, you might hear it when dealing with technology or services. If a GPS provides incorrect directions, you might mutter to yourself, 「ナビが間違っている」 (The nav is wrong). If you receive the wrong order at a restaurant, though you might use 違う to be polite, the kitchen staff might say to each other, 「注文が間違っていた」 (The order was wrong). It is also common in news reports when discussing misinformation or errors in public records. The word carries a sense of objective reality being at odds with the presented information.

Media & Entertainment

Common in detective dramas ('Your alibi is wrong!') or battle anime ('Your ideals are wrong!').

Another frequent location for this word is in the titles of books or articles, particularly those that challenge conventional wisdom. A book titled 「間違っている日本経済」 (The Wrong Japanese Economy) would be a critique of current economic policies. In these cases, the word is used to provoke thought and suggest that the status quo is flawed. It moves beyond simple factual errors into the realm of systemic or ideological critique. Whether it's a small typo or a massive social injustice, 間違っている is the go-to phrase for identifying what is not as it should be.

Public Announcements

'There was an error in the previous announcement.' (Saki hodo no anaunsu ni machigai ga gozaimashita.)

One of the most frequent mistakes English speakers make is using 間違っている when they actually mean "different." In English, "That's wrong" and "That's different" are distinct, but in Japanese, the word 違う (chigau) often covers both. If you want to say "That's not what I meant" or "That's not the right one," 違う is usually more natural and less accusatory than 間違っている. Using 間違っている can sound like you are grading someone's life, whereas 違う simply notes a discrepancy.

Mistake 1: Confusing with 'Chigau'

Don't say 'machigatte iru' when you just mean 'No, that's not it.' Use 'chigau' for general disagreement.

Another common error is the confusion between 間違っている (machigatte iru) and 間違える (machigaeru). As mentioned before, 間違える is a transitive verb that focuses on the person's action. You machigaeru the answer (you make the mistake). The answer machigatte iru (is in a state of being wrong). If you say 「答えを間違っている」, it's grammatically okay but often sounds like "I am currently in the process of having the wrong answer," which is slightly awkward compared to 「答えを間違えた」 (I got the answer wrong).

Mistake 2: Over-directness

Telling a boss 'machigatte imasu' is too blunt. Use 'o-machigai de wa...' or 'chotto chigau kamo...'

Lastly, learners sometimes forget to drop the "i" in casual speech. While machigatte iru is correct, in a real conversation with friends, it almost always becomes machigatteru. Keeping the "i" in casual settings can make you sound like a textbook or overly stiff. Conversely, in formal writing, never drop the "i." Balancing these registers is key to sounding natural. Also, be careful not to confuse it with 間違い (machigai), which is the noun form. You say 間違いがある (there is a mistake) or 間違っている (it is wrong), but not 間違いしている.

Mistake 3: Mixing Nouns and Verbs

'Machigai' is a noun. 'Machigau' is a verb. Don't mix their structures.

Japanese has several ways to express that something is not right, each with its own nuance. The most common alternative is 違う (chigau). While chigau literally means "to differ," it is the standard way to say "No" or "That's wrong" in conversation. It is softer and more versatile than 間違っている. If someone asks if you are a student and you aren't, you say 「違います」. Saying 「間違っています」 would imply the question itself was a factual error in a much more formal or clinical sense.

Comparison: 間違っている vs 違う

'Machigatte iru' = Factual/Moral error. 'Chigau' = Difference/General 'No'.

Another similar term is 誤り (ayamari). This is a more formal, noun-based way to say "error." You often see this in written documents or error messages on computers (e.g., 「入力に誤りがあります」 - There is an error in the input). It sounds more clinical and less personal than 間違っている. Then there is ミス (misu), borrowed from the English "mistake." This is used for small, careless errors, like a typo or a slip of the tongue. You wouldn't say your life philosophy is a misu, but you would say you made a misu on a test.

Formal Alternatives

相違 (soui) - Discrepancy. 不適切 (futekisetsu) - Inappropriate/Incorrect for the situation.

Finally, we have 勘違い (kanchigai), which means a "misunderstanding" or "wrong guess." This is used when the error comes from a person's perception. If you thought today was Friday but it's actually Thursday, that's a kanchigai. While 間違っている could describe the resulting statement ("Today is Friday" is wrong), kanchigai explains why it's wrong—because of a mental mix-up. Choosing between these words depends on whether you want to focus on the fact of the error, the type of error, or the reason for the error.

Summary Table

1. 間違っている: General/State. 2. 違う: Soft/Conversational. 3. 誤り: Formal/Written. 4. ミス: Careless/Small. 5. 勘違い: Misunderstanding.