Why language works

What Does “Ki ni Shinaide” Mean in Japanese? 気にしない, Don’t Worry & Usage

Japanese

Hello, I’m Kodak.

 

You apologize for a small mistake, and your Japanese friend replies:

気にしないで。
Ki ni shinaide.

 

Learner
Does that mean “Don’t worry”, “Don’t mind it”, or “I don’t care”?

And what is the difference between 気にしないで and 気にしない?

Kodak
The most natural translation is often:

“Don’t worry about it.”

It tells the listener not to keep a small problem, mistake, comment, or other person’s opinion in their mind.

 

Quick answer

気にしないで (ki ni shinaide)
⇒ Don’t worry about it.
⇒ Don’t let it bother you.
⇒ Don’t mind it.
⇒ Think nothing of it.

気にしない (ki ni shinai)
⇒ I don’t mind.
⇒ I don’t worry about it.
⇒ I don’t care about it.

気にしないでください
⇒ Please don’t worry about it.

お気になさらないでください
⇒ Please do not concern yourself with it.
More respectful and formal.

 

Contents

What Does Ki ni Shinaide (気にしないで) Mean?

気にしないで is used to tell someone not to worry about, dwell on, or feel bothered by something.

Japanese dictionaries define 気にする as keeping something in one’s mind and feeling worried or concerned about it. 気にしないで is the negative request based on that expression.

気にする
to worry about; to mind; to be concerned about
↓
気にしない
not worry about; not mind; not care about
↓
気にしないで
Don’t worry about it. / Don’t let it bother you.

 

A：遅れてごめん。
Okurete gomen.
Sorry I’m late.

B：大丈夫。気にしないで。
Daijōbu. Ki ni shinaide.
It’s okay. Don’t worry about it.

失敗しても、あまり気にしないで。
Shippai shite mo, amari ki ni shinaide.
Even if you make a mistake, don’t worry about it too much.

Learner
Can I translate it simply as “Don’t worry” every time?
Kodak
Often, yes—but the phrase usually points to a specific thing that may bother the listener.

English “Don’t worry” can also refer to future danger or uncertainty. In that kind of situation, Japanese often uses 心配しないで or 大丈夫だよ.

 

The Core Image of 気にしないで

Let’s divide the expression into its parts.

気 (ki)
mind, awareness, feelings, attention, or concern

に (ni)
marks the point toward which the mind or attention is directed

する (suru)
to do; here, to make something a matter of concern

しない (shinai)
do not; will not

しないで (shinaide)
do not do it / without doing it

 

Core image of 気にしないで

A mistake, comment, or problem enters your mind
↓
You keep holding it there and feel worried or bothered
↓
気にしないで: Do not keep it in your mind

 

Learner
Does 気 mean “air” here?
Kodak
No. 気 can mean physical air, but it also has many mental meanings such as consciousness, mood, attention, concern, and intention.

In 気にする, it refers to the mind or attention.

Related: What Does 気 (Ki) Mean in Japanese?

 

Why Is It 気にしないで Instead of 気にしない?

The difference is mainly between a statement and a request.

気にしない
I do not mind it.
I will not worry about it.
A negative statement.

気にしないで
Don’t worry about it.
A request telling another person not to be concerned.

気にしないでください
Please don’t worry about it.
A polite, explicit request.

 

私は人の意見をあまり気にしない。
Watashi wa hito no iken o amari ki ni shinai.
I don’t worry much about other people’s opinions.

人の意見をあまり気にしないで。
Hito no iken o amari ki ni shinaide.
Don’t worry too much about other people’s opinions.

Learner
Can しないで also mean “without doing”?
Kodak
Yes. The same form has two common functions.

At the end of a sentence, it often means “Don’t…”
Before another action, it can mean “without…”

 

気にしないで。
Don’t worry about it.

周りを気にしないで話してください。
Please speak without worrying about the people around you.

 

How to Pronounce Ki ni Shinaide

Kanji and kana: 気にしないで
Hiragana: きにしないで
Romaji: ki ni shinaide
Mora: き・に・し・な・い・で (6 morae)

 

Pronounce each mora clearly: ki | ni | shi | na | i | de.

Learner
Is nai pronounced like the English word “nigh”?
Kodak
Not exactly. Japanese ない has two morae: な + い.

Keep the vowels relatively clear instead of turning them into one heavy English diphthong.

 

The katakana spelling キニシナイデ is possible for stylistic emphasis, but the normal form is 気にしないで.

When Do Japanese People Say 気にしないで?

1. After Someone Apologizes for a Small Mistake

A：飲み物をこぼしてごめん。
Nomimono o koboshite gomen.
Sorry I spilled the drink.

B：気にしないで。すぐ拭けば大丈夫。
Ki ni shinaide. Sugu fukeba daijōbu.
Don’t worry about it. It’ll be fine if we wipe it up now.

Kodak
This is one of the most natural uses. The speaker is telling the other person that the mistake is not serious enough to keep worrying about.

 

2. When Someone Feels Embarrassed

誰でも間違えるよ。気にしないで。
Dare demo machigaeru yo. Ki ni shinaide.
Everyone makes mistakes. Don’t let it bother you.

3. When Someone Worries About Other People’s Opinions

周りの目は気にしないで、自分らしくやってみて。
Mawari no me wa ki ni shinaide, jibun rashiku yatte mite.
Don’t worry about what others think. Try doing it in your own way.

4. When Declining an Unnecessary Apology or Thanks

A：昨日は手伝えなくて、本当にごめん。
Kinō wa tetsudaenakute, hontō ni gomen.
I’m really sorry I couldn’t help yesterday.

B：もう気にしないで。終わったことだから。
Mō ki ni shinaide. Owatta koto da kara.
Don’t worry about it anymore. It’s over now.

5. When a Detail Is Not Important

細かい違いは気にしないでください。
Komakai chigai wa ki ni shinaide kudasai.
Please don’t worry about the small differences.

Learner
Can 気にしないで ever sound cold?
Kodak
Yes, depending on tone and context.

If someone is deeply hurt or facing a serious problem, simply saying “Don’t worry about it” may sound dismissive.

A warmer response may first acknowledge the feeling: つらかったね。無理に気にしないようにしなくていいよ。

 

Ki ni Shinai (気にしない): “I Don’t Mind” or “I Don’t Care”

気にしない is a statement describing the speaker’s attitude.

気にしない
⇒ I don’t mind.
⇒ I don’t worry about it.
⇒ It doesn’t concern me.
⇒ I don’t care about it.

 

私は年齢を気にしない。
Watashi wa nenrei o ki ni shinai.
I don’t care about age.

多少の傷なら気にしないよ。
Tashō no kizu nara ki ni shinai yo.
I don’t mind a few scratches.

Learner
Is 気にしない always kind and reassuring?
Kodak
No. It can sound positive—“I don’t mind”—or indifferent—“I don’t care.”

Tone and the object matter.

失敗は気にしない can sound resilient.
あなたの気持ちは気にしない would sound uncaring.

 

気にしていない: “I’m Not Bothered by It”

気にしていない focuses on the current state of not being concerned.

気にしない
I generally do not mind / I choose not to worry.

気にしていない
I am not currently bothered by it.

気にしてない
Casual spoken contraction of 気にしていない.

 

昨日のことは気にしてないよ。
Kinō no koto wa ki ni shitenai yo.
I’m not bothered by what happened yesterday.

 

気にしない vs 気にならない

These two expressions are similar but not identical.

気にしない
You do not make something a concern.
Often suggests a choice, attitude, or habit.

気にならない
Something does not naturally bother, interest, or occupy your mind.
Often describes an involuntary reaction.

 

人の評価は気にしない。
Hito no hyōka wa ki ni shinai.
I don’t concern myself with other people’s evaluations.
⇒ My attitude or decision.

この小さな音は気にならない。
Kono chiisana oto wa ki ni naranai.
This small sound doesn’t bother me.
⇒ I naturally do not notice or feel bothered by it.

Learner
Can I use either one for “It doesn’t bother me”?
Kodak
Sometimes both are possible, but the nuance changes.

気にしない sounds like you decide not to care.
気にならない sounds like it simply does not register as a problem.

 

気にする vs 気になる

The positive forms show the same contrast.

気にする
to worry about, mind, or actively concern oneself with something

気になる
to become a concern; to catch one’s attention; to be curious about
Often happens naturally rather than by choice.

 

彼は人の目を気にする。
Kare wa hito no me o ki ni suru.
He worries about what other people think.

隣の店が気になる。
Tonari no mise ga ki ni naru.
I’m curious about the shop next door.

Learner
Can 気になる mean romantic interest?
Kodak
Yes. 気になる人 can mean “someone I’m interested in,” sometimes with a romantic implication.

That is different from 気にする人, which means a person who worries about or pays attention to something.

 

気にしないで vs 心配しないで

Both can translate as “Don’t worry,” but they focus on different kinds of worry.

気にしないで
Don’t dwell on it.
Don’t let it bother you.
Often used for a mistake, comment, embarrassment, small inconvenience, or other people’s opinions.

心配しないで
Don’t worry.
Often used for anxiety about the future, safety, health, results, or what may happen.

 

Compare the expressions in context

遅れたことは気にしないで。
Don’t worry about being late.
⇒ A specific past mistake or inconvenience.

試験の結果は心配しないで。
Don’t worry about the exam results.
⇒ Anxiety about an uncertain result.

さっきの言い間違いは気にしないで。
Don’t worry about the mistake you made earlier.
⇒ Do not dwell on the embarrassing detail.

私は大丈夫だから、心配しないで。
I’m okay, so don’t worry about me.
⇒ Reassurance about someone’s safety or condition.

 

Learner
Are the two ever interchangeable?
Kodak
Yes. Real situations often contain both concern and mental preoccupation.

The distinction is a useful tendency, not an absolute rule.

 

気にしないで vs 大丈夫

大丈夫 literally describes something as safe, sound, certain, or free from problems. In conversation, it often means “It’s okay,” “I’m okay,” or “No problem.”

大丈夫。
It’s okay. / I’m okay. / No problem.

気にしないで。
Don’t worry about it. / Don’t let it bother you.

大丈夫だから、気にしないで。
It’s okay, so don’t worry about it.

 

A：本当にごめんなさい。
Hontō ni gomennasai.
I’m really sorry.

B：大丈夫ですよ。気にしないでください。
Daijōbu desu yo. Ki ni shinaide kudasai.
It’s all right. Please don’t worry about it.

Learner
Why use both? Don’t they say the same thing?
Kodak
They work together.

大丈夫 tells the person that there is no serious problem.
気にしないで tells them what to do emotionally: stop worrying about it.

 

How to Say “Don’t Worry” in Japanese

English uses “Don’t worry” in many situations. Japanese chooses different expressions according to what the listener is worried about and how polite the speaker wants to be.

気にしないで。
Don’t worry about it. / Don’t let it bother you.
Best for small mistakes, embarrassment, and other people’s opinions.

心配しないで。
Don’t worry.
Best for anxiety about future events, safety, health, or results.

大丈夫だよ。
It’s okay. / You’ll be okay.
Reassures the listener that the situation is safe or manageable.

気にしなくていいよ。
You don’t have to worry about it.
Gentle and conversational.

心配いらないよ。
There’s no need to worry.

考えすぎないで。
Don’t overthink it.

無理しないで。
Don’t push yourself too hard.

 

Learner
Which phrase should I memorize first for “Don’t worry”?
Kodak
Memorize this three-way pattern:

Small mistake or embarrassment ⇒ 気にしないで
Future uncertainty or safety ⇒ 心配しないで
Simple reassurance ⇒ 大丈夫だよ

 

Polite Forms of 気にしないで

気にしないでください

気にしないでください is the straightforward polite form.

こちらのことは気にしないでください。
Kochira no koto wa ki ni shinaide kudasai.
Please don’t worry about us / this matter.

どうぞお気になさらないでください

お気になさらないでください respectfully describes the listener’s action of being concerned.

小さなことですので、どうぞお気になさらないでください。
Chiisana koto desu node, dōzo oki ni nasaranaide kudasai.
It is a small matter, so please do not concern yourself with it.

お気になさらず

お気になさらず is a compact formal expression meaning “Please don’t concern yourself with it.”

どうぞお気になさらず。
Dōzo oki ni nasarazu.
Please don’t worry about it.

Learner
Can I say 気にしないでください to a customer or senior person?
Kodak
It is polite, but お気になさらないでください sounds more respectful because it uses honorific language for the listener’s action.

 

Casual, Friendly, and Rough Variations

気にしないで。
Don’t worry about it.
Friendly and neutral-casual.

気にしないでね。
Don’t worry about it, okay?
Softer and warmer.

気にしなくていいよ。
You don’t need to worry about it.
Gentle and conversational.

気にすんな。
Don’t worry about it.
Very casual contraction; may sound rough.

気にするな。
Do not worry about it.
A direct command; forceful and often masculine in fiction.

 

Learner
I hear 気にすんな in anime. Can I use it?
Kodak
It is common in rough casual speech, but beginners should be careful.

With friends, 気にしないで or 気にしなくていいよ is safer and warmer.

 

What Does “Donmai” Mean?

ドンマイ (donmai) comes from the English phrase “don’t mind,” but its Japanese use is different from natural modern English.

ドンマイ！
Don’t worry about it!
Shake it off!
Better luck next time!

Often used after a mistake in sports, games, school, or casual group activities.

 

ミスは誰にでもあるよ。ドンマイ！
Misu wa dare ni demo aru yo. Donmai!
Everyone makes mistakes. Shake it off!

Learner
Can I say English “Don’t mind” in the same way?
Kodak
Usually not. Japanese ドンマイ developed its own fixed meaning.

In English, people are more likely to say “Don’t worry,” “Never mind,” “Shake it off,” or “Better luck next time.”

 

How to Reply to 気にしないで

ありがとう。
Thanks.

ありがとう、そうする。
Thanks, I’ll try not to worry about it.

うん、わかった。
Okay, I understand.

そう言ってくれてありがとう。
Thank you for saying that.

ごめんね。本当にありがとう。
I’m sorry—and thank you, really.

まだ少し気になるけど、ありがとう。
It still bothers me a little, but thank you.

 

Learner
Do I have to say I’m no longer worried?
Kodak
No. You can appreciate the reassurance without pretending your feelings disappeared.

まだ少し気になるけど、ありがとう is honest and natural.

 

When “Don’t Worry” May Not Be the Best Response

Sometimes a person needs empathy, information, or practical help rather than an instruction not to worry.

Instead of only saying:
気にしないで。
Don’t worry about it.

You can say:
それはつらかったね。
That must have been hard.

話してくれてありがとう。
Thank you for telling me.

何かできることはある？
Is there anything I can do?

すぐに気にしなくなる必要はないよ。
You don’t have to stop caring about it immediately.

 

Learner
So 気にしないで is not always comforting?
Kodak
Correct.

It works well for small mistakes or unnecessary concern. For serious pain, first recognizing the person’s feeling often sounds more caring.

 

How 気にしないで Is Used in Anime and Casual Speech

気にしないで。
Don’t worry about it.
Neutral and gentle depending on tone.

気にしないでね。
Don’t worry about it, okay?
Warm and caring.

そんなの気にすんな。
Don’t worry about that.
Rough casual speech.

気にするな！ 前を向け！
Don’t dwell on it! Look forward!
Dramatic, forceful command.

別に気にしてない。
It doesn’t bother me.
Casual and sometimes emotionally defensive.

 

Learner
Why does 別に気にしてない sometimes sound like the person actually is bothered?
Kodak
Because tone and context can contradict the literal words.

A character may deny being bothered while their expression clearly shows the opposite. That is a storytelling effect, not a different dictionary meaning.

 

Common Beginner Mistakes

Mistake 1: Using 気にしない When You Want to Tell Someone “Don’t Worry”

気にしない
I don’t mind / I don’t worry.

気にしないで
Don’t worry about it.

Mistake 2: Translating 気にしない as “I Don’t Care” in Every Context

It may mean “I don’t care,” but it can also mean the softer “I don’t mind” or “I’m not bothered.”

Mistake 3: Using 気にしないで for Every Type of Worry

Use 心配しないで more naturally for concern about safety, health, future results, or uncertain events.

Mistake 4: Confusing 気にしない with 気にならない

気にしない often describes a chosen attitude. 気にならない often describes something that simply does not bother you.

Mistake 5: Using 気にするな in Polite Conversation

気にするな is a direct command. Use 気にしないでください or お気になさらないでください when politeness is required.

 

Natural Example Sentences with 気にしないで

遅れたことは気にしないで。
Okureta koto wa ki ni shinaide.
Don’t worry about being late.

誰でも間違えるから、気にしないでね。
Dare demo machigaeru kara, ki ni shinaide ne.
Everyone makes mistakes, so don’t worry about it, okay?

私のことは気にしないで、先に行って。
Watashi no koto wa ki ni shinaide, saki ni itte.
Don’t worry about me. Go on ahead.

小さな傷だから、気にしなくていいよ。
Chiisana kizu da kara, ki ni shinakute ii yo.
It’s only a small scratch, so you don’t have to worry about it.

他人の評価を気にしないで、自分の道を進みたい。
Tanin no hyōka o ki ni shinaide, jibun no michi o susumitai.
I want to follow my own path without worrying about other people’s opinions.

さっきの発言はもう気にしていません。
Sakki no hatsugen wa mō ki ni shite imasen.
I’m no longer bothered by what you said earlier.

この程度の騒音なら、私は気にならない。
Kono teido no sōon nara, watashi wa ki ni naranai.
This level of noise doesn’t bother me.

結果を気にしすぎないで、まず挑戦してみよう。
Kekka o ki ni shisuginaide, mazu chōsen shite miyō.
Don’t worry too much about the result. Let’s try first.

私は大丈夫だから、心配しないで。
Watashi wa daijōbu da kara, shinpai shinaide.
I’m okay, so don’t worry about me.

ご迷惑をおかけしました。
Gomeiwaku o okake shimashita.
I’m sorry for causing trouble.

いいえ、どうぞお気になさらないでください。
Iie, dōzo oki ni nasaranaide kudasai.
Not at all. Please don’t concern yourself with it.

人の目を気にしない性格になりたい。
Hito no me o ki ni shinai seikaku ni naritai.
I want to become the kind of person who doesn’t worry about what others think.

まだ少し気になるけど、話を聞いてくれてありがとう。
Mada sukoshi ki ni naru kedo, hanashi o kiite kurete arigatō.
It still bothers me a little, but thank you for listening.

 

Which “Dont Worry” Fits? 30-Second Check

Japanese splits Dont worry into several phrases. Answer two quick questions to pick the right one.

Q1. What kind of worry is it?
A small mistake, embarrassment, or someone elses opinion -> 気にしないで
Dont dwell on that specific thing.
Anxiety about the future, safety, health, or results -> 心配しないで
Dont feel anxious about what may happen.
Q2. Who are you talking to?
A close friend or casual relationship -> 気にしないで / 気にしなくていいよ
Warm and casual.
A customer, senior, or someone you must be polite to -> お気になさらないでください
Respectful, honorific form.

※ 気にしない states your own attitude; 気にしないで asks the other person not to worry.

FAQ About Ki ni Shinaide and “Don’t Worry” in Japanese

What does ki ni shinaide mean?

気にしないで (ki ni shinaide) means “Don’t worry about it,” “Don’t let it bother you,” or “Don’t mind it.” It is often used after a small mistake, apology, or embarrassing moment.

What does ki ni shinai mean?

気にしない means “I don’t mind,” “I don’t worry about it,” or sometimes “I don’t care.” It is a statement rather than a request.

What is the difference between ki ni shinai and ki ni shinaide?

気にしない states that someone does not mind or worry. 気にしないで asks another person not to worry or be bothered.

How do you say “Don’t worry” in Japanese?

Use 気にしないで for a small mistake or something that bothers the listener, 心配しないで for future uncertainty or safety, and 大丈夫だよ for simple reassurance.

What is the difference between 気にしないで and 心配しないで?

気にしないで often means “Don’t dwell on that specific thing.” 心配しないで more directly means “Don’t be anxious,” especially about the future, health, safety, or results.

What is the difference between 気にしない and 気にならない?

気にしない often suggests a chosen attitude of not caring or worrying. 気にならない means something does not naturally bother or occupy the person’s mind.

Is 気にしないで polite?

It is friendly and casual. 気にしないでください is polite, while お気になさらないでください is more respectful.

How do you reply to 気にしないで?

You can say ありがとう, そう言ってくれてありがとう, or うん、わかった. You may also honestly say まだ少し気になるけど、ありがとう.

What does 気にすんな mean?

気にすんな is a rough casual contraction meaning “Don’t worry about it.” It is common in informal speech and fiction but is not suitable for polite situations.

What does donmai mean in Japanese?

ドンマイ is Japanese casual encouragement meaning “Don’t worry,” “Shake it off,” or “Better luck next time,” especially after a mistake in sports, games, or group activities.

 

Summary: 気にしないで, 気にしない, and “Don’t Worry” in Japanese

● 気にしないで
Don’t worry about it. / Don’t let it bother you.

● 気にしない
I don’t mind. / I don’t worry about it. / I don’t care about it.

● Core image
Do not keep the mistake, comment, or problem in your mind as a source of concern.

● 気にしない vs 気にならない
気にしない = choose not to care or worry
気にならない = it naturally does not bother you

● 気にしないで vs 心配しないで
気にしないで = don’t dwell on a particular issue
心配しないで = don’t feel anxious about what may happen

● Polite forms
気にしないでください
お気になさらないでください

● Useful beginner pattern
Small mistake ⇒ 気にしないで
Future concern ⇒ 心配しないで
General reassurance ⇒ 大丈夫だよ

 

Learner
There were many similar expressions. Which three should I learn first?
Kodak
Start with these:

気にしない ⇒ I don’t mind
気にしないで ⇒ Don’t worry about it
心配しないで ⇒ Don’t worry about what may happen

Then remember the core image: do not keep the problem in your mind.

 

References

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