Yukaすいません vs すみません — you've probably heard both and wondered if they're the same. They mean the same thing, but one is more casual and one is more correct. Let's settle this once and for all!
ReiThis is a really practical question! Both are used constantly in Japanese daily life. Knowing which to use in which situation will make you sound more natural.
At a Glance
| Form | Register | Notes |
|---|---|---|
| すみません | Standard / polite | The correct, standard form — safe in all contexts |
| すいません | Casual / spoken | A contracted pronunciation — very common in speech, but not for formal writing |
すみません — The Standard Form
すみません is the standard, correct form. It comes from the verb 済む (すむ) — meaning “to be settled/finished” — with the negative ません. The literal sense is something like “this won't be settled (with just an apology)” — expressing that you owe something.
すみません is used for:
- Getting someone's attention: すみません、ちょっといいですか？
- Apologizing: すみません、遅れました。
- Thanking (humble): すみません、ありがとうございます。
- Asking for help: すみません、道を教えていただけますか？
Yukaすみません、この席は空いていますか？
Excuse me, is this seat taken?
| Japanese | English |
|---|---|
| すみません、注文いいですか？ | Excuse me, can I order? |
| 遅れてすみません。 | Sorry I'm late. |
| すみません、もう一度お願いします。 | I'm sorry, could you please repeat that? |
すいません — The Casual Contracted Form
すいません is a casual, contracted pronunciation of すみません — the み (mi) vowel has shifted to い (i). This is extremely common in everyday spoken Japanese, especially in casual or relaxed contexts.
- Natural in casual conversation and restaurants
- Fine with friends, shopkeepers, and acquaintances
- Avoid in formal writing, keigo, or very formal settings
- Both forms are understood and widely accepted
ReiThe truth is, すいません is so widely used that many native Japanese speakers use it without thinking — even in semi-formal situations. You won't be judged for using it in everyday conversation. But if you're writing formally, always use すみません.
When to Use Each
| Situation | Recommended form |
|---|---|
| Formal writing (emails, letters) | すみません |
| Formal business speech | すみません |
| Everyday casual conversation | Either — すいません is fine |
| At a restaurant calling a server | Either — both are natural |
| Very formal apology to a superior | すみません (or 申し訳ありません) |
Other Levels of Apology
| Expression | Level | Used when… |
|---|---|---|
| すいません | Casual | Everyday — getting attention, casual sorry |
| すみません | Standard | Most situations — polite and correct |
| 申し訳ありません (もうしわけ) | Formal/keigo | Business, formal apology to superiors |
| 失礼しました (しつれい) | Polite/formal | Apologizing for a social/professional breach |
| ごめんなさい | Personal/emotional | Sincere apology to someone you know |
| ごめん | Very casual | Close friends and family only |
Quick Quiz
Choose the most appropriate form:
- レストランで店員を呼ぶとき → すみません / すいません (both fine)
- ビジネスメールで → すみません (always written form)
- 友達に「待たせてごめん」の丁寧版 → すみません
- 上司への正式な謝罪 → 申し訳ありません
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