English speakers often translate both まちがい (machigai) and しっぱい (shippai) as “mistake” — but in Japanese these words describe different kinds of errors. Knowing which to use will help you talk about mistakes, failures, and learning from experience much more naturally in Japanese.
YukaRei, my teacher mentioned まちがい and しっぱい today. What’s the difference?
ReiGreat question! Both come up a lot in everyday Japanese. The trick is knowing which context calls for which — let me show you!
At a Glance: まちがい vs. しっぱい
| Feature | まちがい / 間違い (machigai) | しっぱい / 失敗 (shippai) |
|---|---|---|
| Core meaning | Mistake / error / being wrong | Failure / failed attempt |
| Type of error | Incorrect answer, wrong choice | Something that did not succeed |
| Implies a correct answer? | Yes — there is a right answer | Not necessarily — the goal just wasn’t reached |
| Kanji | 間違い | 失敗 |
| Verb form | まちがえる (machigaeru) | 失敗する (shippai suru) |
| Opposite | 正解 (seikai, correct answer) | 成功 (seikou, success) |
| JLPT level | N4 | N4 |
まちがい (machigai) — An Error: Incorrect vs. Correct
まちがい refers to an error where there is a correct answer or right way — and you got it wrong. It can be a spelling mistake, a factual error, a wrong calculation, a misunderstanding, or choosing the wrong path. The key implication is that a correct version exists.
The related verb is まちがえる (machigaeru, “to make a mistake / to get wrong”) or まちがう (machigau, “to be wrong”).
Example 1 — a spelling or factual error:
書類に間違いがあります。
Shorui ni machigai ga arimasu.
There is a mistake in the document.
Example 2 — getting the wrong answer:
テストで間違えた問題が多かった。
Tesuto de machigaeta mondai ga oukatta.
I got many questions wrong on the test.
Example 3 — taking the wrong train:
電車を間違えてしまった。
Densha wo machigaete shimatta.
I took the wrong train.
YukaI see… so context really matters with まちがい? It’s not just about the literal meaning?
ReiRight! Japanese often works that way. まちがい especially has nuances that go beyond a direct translation — keep that in mind.
しっぱい (shippai) — A Failure: The Goal Was Not Reached
しっぱい (失敗) refers to a failure — an attempt at something that did not succeed. The focus is on the outcome: you tried something, and it did not work out as hoped. It does not necessarily imply that there was a “correct answer” — it just means the desired result was not achieved.
The verb form is 失敗する (shippai suru, “to fail”). The opposite is 成功する (seikou suru, “to succeed”).
Example 1 — a cooking failure:
ケーキを作ったけど失敗した。
Keeki wo tsukutta kedo shippai shita.
I tried to make a cake but it failed.
Example 2 — failing a project or plan:
今回のプロジェクトは失敗に終わった。
Konkai no purojekuto wa shippai ni owatta.
This project ended in failure.
Example 3 — learning from failure:
失敗は成功の母だ。
Shippai wa seikou no haha da.
Failure is the mother of success. (A common Japanese proverb)
YukaGot it. And しっぱい — is that the opposite, or more like a different usage?
ReiMore of a different usage! しっぱい carries its own feel. Comparing them together like this is actually the fastest way to master both.
Key Difference: Correct vs. Successful
The clearest way to tell them apart: まちがい involves correctness (right vs. wrong), while しっぱい involves success (succeeded vs. failed).
| Situation | まちがい | しっぱい | Why |
|---|---|---|---|
| Wrong answer on a test | ✓ 間違い | ✗ | Has a correct answer |
| Business plan that didn’t work | ✗ | ✓ 失敗 | Goal not reached, no single “right answer” |
| Mispronouncing a word | ✓ 発音の間違い | ✗ | There is a correct pronunciation |
| A failed experiment | ✗ | ✓ 実験の失敗 | The experiment did not produce the intended result |
| Calculating the wrong amount | ✓ 計算ミス / 間違い | ✗ | Has a correct calculation |
| Failing a job interview | ✗ | ✓ 面接に失敗した | Did not achieve the goal (getting the job) |
Related Vocabulary
These words are useful to know alongside まちがい and しっぱい:
| Word | Reading | Meaning |
|---|---|---|
| 正解 | seikai | Correct answer (opposite of 間違い) |
| 成功 | seikou | Success (opposite of 失敗) |
| ミス | misu | Mistake / slip (loanword, casual equivalent of 間違い) |
| エラー | eraa | Error (loanword, used in tech contexts) |
| 過ち | ayamachi | Mistake / fault (more serious/literary nuance) |
Decision Flowchart: まちがい or しっぱい?
Are you talking about something going wrong?
|
v
Is there a CORRECT ANSWER or RIGHT WAY
that exists?
| |
YES NO
| |
v v
まちがい (machigai) Did you ATTEMPT something
"mistake / error" and it DIDN'T WORK OUT?
|
v
しっぱい (shippai)
"failure"Quick Quiz — Test Yourself!
YukaI think I’ve finally got it! Let’s take the quiz to be sure.
ReiPerfect confidence check! Let’s go — you’ve got this!
Choose まちがい (machigai) or しっぱい (shippai) for each blank.
Q1. I made a mistake on the math test.
数学のテストで＿＿＿をした。
Suugaku no tesuto de ___ wo shita.
Answer: 間違い (machigai) — math has correct answers; getting one wrong = まちがい.
Q2. My new business venture failed.
新しいビジネスが＿＿＿した。
Atarashii bijinesu ga ___ shita.
Answer: 失敗 (shippai) — a business not succeeding = 失敗.
Q3. You made a typo in your email.
メールに誤字の＿＿＿があった。
Meeru ni goji no ___ ga atta.
Answer: 間違い (machigai) — there is a correct spelling; a typo = まちがい. (ミス is also common here.)
Q4. The surgery was unsuccessful.
手術は＿＿＿に終わった。
Shujutsu wa ___ ni owatta.
Answer: 失敗 (shippai) — the procedure did not achieve its goal = 失敗.
Q5. You said the wrong thing at the wrong time.
場違いなことを言ってしまった。それは大きな＿＿＿だった。
Answer: Both are possible. 間違い focuses on saying the wrong thing (incorrect). 失敗 focuses on the social blunder (unsuccessful interaction). In practice, 失敗 is more natural here.
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あわせて読みたい
Now that you know まちがい vs. しっぱい, check out our guide on 正解 (seikai) vs. まちがい to understand the full correct-vs-wrong vocabulary:
Also check out our guide on いい (ii) vs. わるい (warui) — the essential good vs. bad vocabulary:
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