Two kinds of worry
Ki ni suru means to mind, to be bothered, to keep thinking about something. Telling someone ki ni shinaide releases them from guilt or embarrassment about something that has happened.
Shinpai suru means to worry in the anxious sense, about health, results or the future. Shinpai shinaide tells someone that things will be all right.
| Japanese | Romaji | Meaning |
|---|---|---|
| 気にする | ki ni suru | To mind, to be bothered by |
| 心配する | shinpai suru | To worry, to be anxious about |
| 気にしないで。 | Ki ni shinaide. | Do not worry about it. (it is fine) |
| 心配しないで。 | Shinpai shinaide. | Do not worry. (it will be fine) |
Ki ni shinaide: after an apology or a favour
This is the phrase for when someone apologises, thanks you for something small, or feels embarrassed. It says the matter is closed and nothing is owed.
Adding zenzen, not at all, makes it clear you really were not bothered, and kudasai makes it polite enough for acquaintances.
| Japanese | Romaji | Meaning |
|---|---|---|
| 気にしないでね。 | Ki ni shinaide ne. | Do not worry about it, okay? |
| 気にしないでください。 | Ki ni shinaide kudasai. | Please do not worry about it. |
| 全然気にしてないよ。 | Zenzen ki ni shite nai yo. | I really do not mind at all. |
| そんなこと、気にしなくていいよ。 | Sonna koto, ki ni shinakute ii yo. | You do not need to worry about something like that. |
Shinpai shinaide: about what comes next
When a friend is nervous about an exam, a hospital visit or a difficult conversation, shinpai shinaide and its warmer companions offer reassurance about the outcome.
Kitto adds conviction, and nantoka naru, it will work out somehow, is a relaxed optimism that friends use with each other.
| Japanese | Romaji | Meaning |
|---|---|---|
| 心配しないで。 | Shinpai shinaide. | Do not worry. |
| 心配いらないよ。 | Shinpai iranai yo. | There is nothing to worry about. |
| きっと大丈夫だよ。 | Kitto daijōbu da yo. | I am sure it will be fine. |
| なんとかなるよ。 | Nantoka naru yo. | It will work out somehow. |
Replying to an apology
Most real uses of don't worry are replies to sumimasen or gomen. A quick ie ie, followed by daijōbu, is the natural rhythm, and it matters to say it promptly so the other person can relax.
When both sides caused the problem, kochira koso turns the apology around, and otagaisama, we are in the same boat, suits small mutual inconveniences.
| Japanese | Romaji | Meaning |
|---|---|---|
| いえいえ、大丈夫ですよ。 | Ie ie, daijōbu desu yo. | Oh, no, it is fine. |
| 全然大丈夫です。 | Zenzen daijōbu desu. | It is absolutely fine. |
| こちらこそ、すみません。 | Kochira koso, sumimasen. | No, I am the one who should apologise. |
| お互いさまです。 | Otagaisama desu. | We are in the same situation, no need to apologise. |
The many uses of daijōbu itself, including the ones that mean no thank you, are covered in the guide to daijōbu.
Reassuring a superior or a customer
Telling a superior how to feel is delicate, so the polite versions use honorific language. Dōzo o-ki ni nasaranaide kudasai is the respectful form of ki ni shinaide, and go-shinpai naku is a short, polished reassurance.
In service settings, the reassurance is usually paired with what you will do, which is more convincing than the words alone.
| Japanese | Romaji | Meaning |
|---|---|---|
| どうぞお気になさらないでください。 | Dōzo o-ki ni nasaranaide kudasai. | Please do not concern yourself about it. |
| ご心配なく。 | Go-shinpai naku. | Please do not worry. |
| 問題ございません。 | Mondai gozaimasen. | There is no problem at all. |
| こちらで対応いたしますので、ご安心ください。 | Kochira de taiō itashimasu node, go-anshin kudasai. | We will take care of it, so please rest assured. |
Comforting a friend
When a friend is struggling, too quick a don't worry can sound dismissive. Acknowledging the difficulty first and offering support tends to land better than insisting everything is fine.
| Japanese | Romaji | Meaning |
|---|---|---|
| 大変だったね。 | Taihen datta ne. | That sounds really hard. |
| 無理しないでね。 | Muri shinaide ne. | Do not push yourself too hard. |
| 何かあったら言ってね。 | Nanika attara itte ne. | Let me know if anything comes up. |
| ゆっくり休んでね。 | Yukkuri yasunde ne. | Get some proper rest. |
Which reassurance to use
This table sorts the common situations.
| Situation | What to say | Avoid |
|---|---|---|
| A friend apologises for being late | Ki ni shinaide, zenzen daijōbu | Shinpai shinaide |
| A friend is nervous about an exam | Shinpai shinaide, kitto daijōbu da yo | Ki ni shinaide |
| A colleague thanks you for a small favour | Ie ie, ki ni shinaide kudasai | Saying nothing |
| Your manager apologises to you | Dōzo o-ki ni nasaranaide kudasai | Casual ki ni shinaide |
| A customer is worried about a delay | Go-anshin kudasai, with a concrete plan | Nantoka naru |
| A friend shares bad news | Taihen datta ne, then an offer of help | Jumping straight to reassurance |
Apologies and reassurance come up in Unihongo's roleplay missions, such as apologising to a neighbour or handling a customer complaint, and the corrections in the session report point out lines that did not fit the situation, which is the kind of error native speakers understand and quietly register.

