大丈夫 (daijōbu) is one of the most useful (and most slippery) words in Japanese. Its core meaning is "okay / all right / fine," but in practice it stretches across reassurance, "I'm good," and a soft "no thanks."
The core meaning
At heart, daijōbu means everything is fine: safe, all right, no problem.
- 大丈夫？ (Daijōbu?) "Are you okay?"
- 大丈夫です。 (Daijōbu desu.) "I'm okay / it's fine."
Add です (desu) to make it polite; drop it with friends.
The tricky part: "no thanks"
Here's what catches travelers out. When a clerk asks if you want a bag, a receipt, or chopsticks, answering 大丈夫です usually means "no thank you, I'm good", not "yes, okay." Context and a small head shake carry the "no."
So if you actually do want the thing, don't say daijōbu. Say はい、お願いします (hai, onegaishimasu), "yes, please."
Reading yes vs. no
| They ask | You want it? | Say |
|---|---|---|
| 袋は？ (a bag?) | No | 大丈夫です (daijōbu desu) |
| 袋は？ (a bag?) | Yes | お願いします (onegaishimasu) |
| 大丈夫？ (you okay?) | Yes, fine | 大丈夫です / はい |
Where it comes from
The kanji are literally 大 (big) + 丈夫 (sturdy/robust), so daijōbu paints a picture of "solidly fine." It's the same reassuring word a friend uses when you trip, a doctor uses to calm you, and a shop uses to offer you something.
One word, a lot of range, which is exactly why hearing it in real situations beats memorizing a definition. Point a camera translator at Japanese signs and packaging, or use voice to catch phrases like this in the wild, and words like daijōbu start to click. Next: how to say hello in Japanese and the essential travel phrases. You'll hear daijōbu across shops and restaurants, where the same camera also translates the menu and reads manga pages in place.