Question
I keep hearing “sumimasen” everywhere in Tokyo — when someone bumps me on the train, when I want to wave a waiter over, even when a stranger thanks me for picking up her dropped scarf. My textbook says it means “I’m sorry,” but that clearly isn’t the whole story. What does sumimasen actually mean?
Answer by Professional Japanese Teacher
すみません（sumimasen）。
Sumimasen.
Excuse me. / I’m sorry. / Thank you. (depending on context)
You’ve noticed something real. Sumimasen is one word doing three jobs — a light apology, an “excuse me” to get attention, and a softened thank-you when someone has gone out of their way for you. The literal feeling is closer to “this isn’t settled (between us),” which is why it stretches across all three.
In day-to-day life, the “excuse me” use is probably the one you’ll hear most — calling a waiter, squeezing past someone, getting a shop assistant’s attention. The light-apology use is also very common for small bumps and small mistakes with strangers.
One quick tip: don’t reach for sumimasen when you’ve done something genuinely wrong. For a real apology to a friend, gomennasai (ごめんなさい) feels warmer and more sincere — sumimasen there can sound a little distant.
