22 Japanese ways to say “Can you keep a secret?”

Want to share something hush-hush in Japanese? Knowing how to say “Can you keep a secret?” opens up a whole new level of trust and closeness.

It’s a phrase loaded with warmth and confidentiality, perfect for those moments when you want someone to really listen.

In Japanese, there are many ways to ask this, ranging from casual to formal, and even playful expressions that native speakers use.

Learning these phrases will not only boost your Japanese skills but also help you connect on a deeper personal level.

Plus, it’s fun to see the different ways a language can express something as simple yet meaningful as keeping a secret.

Ready? Let’s dive into 22 Japanese ways to say “Can you keep a secret?” and how to use them naturally.

Understanding the Basics

Before we jump into the list, let’s get a quick grasp of the key words.

“Secret” in Japanese is 秘密 (ひみつ, himitsu), and “keep/guard” can be translated as 守る (まもる, mamoru). Combining these helps create many common phrases.

Adding polite forms or casual twists changes the tone, so you can match your phrase to the situation.

Sometimes, using a great beginner phrasebook can give you a perfect starting point for a cohesive understanding.

Practice these basics to feel confident moving forward.

Once you’re comfortable, the variations below will feel much more natural.

Part 1: Casual Suggestions

1. 内緒にしてくれる？ (Naisho ni shite kureru?) – “Can you keep it a secret?”

This is a straightforward and casual way to ask if someone can keep a secret.

内緒 (な い しょ, naisho) means “secret,” and してくれる (shite kureru) means “will you do (this for me)?” Together, it’s “Will you keep it a secret for me?”

It’s great for close friends or informal situations.

Using it shows trust without sounding too heavy.

Related phrase: 内緒だよ (naisho da yo) means “It’s a secret, okay?”

Try this one to sound casual and friendly!

2. 誰にも言わないでね (Dare ni mo iwanaide ne) – “Don’t tell anyone, okay?”

This phrase literally means “Don’t tell anyone.”

誰にも (だれ に も, dare ni mo) means “to anyone,” and 言わないで (いわないで, iwanaide) is “don’t say/tell.” The ね (ne) adds a soft, friendly tone.

It’s easy to remember and perfect for casual secrets.

Don’t forget the ね—it makes the request feel gentle and less commanding.

Use it when you want to emphasize discretion without sounding too formal.

It’s a handy phrase to practice for everyday secret-sharing!

3. ヒミツにしてね (Himitsu ni shite ne) – “Keep it secret, okay?”

ヒミツ (himitsu) is the phonetic spelling of 秘密, meaning “secret.”

にして (ni shite) means “make it” or “keep it,” and ね (ne) softens the tone.

This is a cute, casual way to say “Please keep it a secret.”

It’s short and easy to say, making it perfect for friends.

Try pairing this with a smile or wink for extra charm.

It’s a playful and warm expression to keep in your Japanese toolkit.

4. バレないようにしてね (Barenai you ni shite ne) – “Make sure it doesn’t get out, okay?”

バレない (barenai) means “won’t be found out” or “won’t leak.”

ようにして (you ni shite) means “make sure to” or “do so that,” with ね (ne) softening the tone.

This phrase is a bit more playful and implies careful secrecy.

It’s great when you want to stress the importance of not letting the secret slip.

Perfect for casual chats where you want your friend to be extra careful.

Use this to add a little suspense or fun to your secret-sharing!

5. これは秘密だよ (Kore wa himitsu da yo) – “This is a secret, okay?”

Simple and direct, this phrase means “This is a secret.”

これは (kore wa) means “this is,” 秘密 (himitsu) means “secret,” and だよ (da yo) emphasizes the statement warmly.

It’s a great way to set the tone right before sharing something confidential.

Use it to make sure everyone understands the importance of keeping quiet.

It’s casual but carries a sense of seriousness.

Perfect for when you want to gently remind someone to be discreet.

6. 内緒話なんだけど (Naisho banashi nan da kedo) – “It’s a secret talk, but…”

内緒話 (ないしょばなし, naisho banashi) means “secret talk.”

なんだけど (nan da kedo) is a soft way to say “but” or “I have something to say.”

This phrase is an inviting way to start sharing a secret.

It prepares the listener for something confidential.

Great for casual conversations when you want to ease into the secret.

Use it to sound friendly and approachable before revealing your news.

7. 誰にも言わないでください (Dare ni mo iwanaide kudasai) – “Please don’t tell anyone.”

This is the polite version of “Don’t tell anyone.”

ください (kudasai) adds politeness, making it suitable for formal or respectful conversations.

Perfect for situations where you want to be respectful but clear.

It’s a phrase you can use with acquaintances or colleagues.

Try practicing this to sound polite and serious when needed.

It’s a versatile and useful phrase to keep handy.

8. ここだけの話だけど (Koko dake no hanashi dakedo) – “This is just between us, but…”

Here, ここだけの話 (koko dake no hanashi) means “a story only here,” or “just between us.”

だ けど (dakedo) softens the introduction, like “but…”

This phrase is perfect for setting a confidential tone.

It’s casual and implies trust between the speakers.

Use this to begin a secret-sharing moment in a friendly way.

It’s a natural phrase often used in everyday conversations.

Part 2: Polite & Formal Suggestions

9. 秘密を守っていただけますか？ (Himitsu o mamotte itadakemasu ka?) – “Could you please keep a secret?”

This is a very polite and formal way to ask if someone can keep a secret.

秘密 (ひみつ, himitsu) means “secret,” 守って (まもって, mamotte) is the -te form of “to protect/keep,” and いただけますか (itadakemasu ka) is a very polite request form.

Use this in business or formal social situations.

It shows respect and seriousness about the confidentiality.

This phrase is a great tool for professional conversations.

Practice to sound courteous and trustworthy in important contexts.

10. お話ししたことは秘密にしてくださいませんか？ (Ohanashi shita koto wa himitsu ni shite kudasaimasen ka?) – “Would you please keep what I told you secret?”

This phrase literally means “Would you please keep secret what I told you?”

It’s very polite and somewhat formal, perfect for sensitive topics.

お話ししたこと (ohanashi shita koto) means “the thing I told you.”

Use this to politely ask someone to keep information confidential.

It’s a respectful way to ensure privacy in important conversations.

Great for formal gatherings or when you want to be extra careful.

11. 他言無用です (Tagon muyou desu) – “No talking about this.”

他言無用 (たごんむよう, tagon muyou) is a formal, somewhat old-fashioned phrase meaning “No talking about this.”

It’s often used in written or official contexts.

Use it to convey a strong sense of confidentiality.

This phrase sounds very serious and should be used carefully.

It’s great for formal warnings or strict confidentiality requests.

Practicing this phrase helps understand formal Japanese nuances.

12. このことは内密にお願いいたします (Kono koto wa naimitsu ni onegai itashimasu) – “I humbly request you keep this confidential.”

内密 (ないみつ, naimitsu) means “confidential” or “private.”

お願い致します (onegai itashimasu) is the humble, polite way to say “please.”

This phrase is very respectful and formal.

Use it in serious situations requiring discretion.

It’s perfect for business or official requests.

Practicing this phrase will boost your formal Japanese skills.

13. 口止めしてもらえますか？ (Kuchidome shite moraemasu ka?) – “Can you promise to keep quiet about this?”

口止め (くちどめ, kuchidome) means “gagging” or “keeping someone silent.”

してもらえますか (shite moraemasu ka) asks “can you do this for me?” politely.

This phrase politely asks someone to promise silence.

It’s a great phrase for close but respectful conversations.

Use it when you want to sound sincere but not too casual.

It adds a bit of weight to your request for secrecy.

14. 絶対に秘密にしてください (Zettai ni himitsu ni shite kudasai) – “Please absolutely keep it a secret.”

絶対に (zettai ni) means “absolutely” or “definitely.”

This phrase strongly emphasizes the need for secrecy.

It’s polite yet firm, great for important matters.

Use it when you want to make sure the other person understands the gravity.

Adding ください (kudasai) keeps the request polite.

This phrase is perfect for urgent, serious secrets.

15. この話は誰にも漏らさないでください (Kono hanashi wa dare ni mo morasanai de kudasai) – “Please don’t leak this story to anyone.”

漏らす (もらす, morasu) means “to leak” or “to disclose.”

誰にも (dare ni mo) means “to anyone.”

This formal phrase asks someone not to reveal the secret.

It’s polite and clear, suitable for sensitive topics.

Use it in situations where you want to ensure confidentiality.

Practice this to sound firm but respectful.

16. どうか秘密にしておいてください (Douka himitsu ni shite oite kudasai) – “Please, for the sake of kindness, keep this secret.”

どうか (douka) adds a pleading, kind tone like “please.”

This phrase politely requests someone to keep a secret with warmth.

It’s formal and respectful, great for delicate situations.

Use it to add emotional weight to your request.

Perfect for heartfelt moments where trust matters.

This phrase helps you sound both polite and sincere.

Part 3: Very Casual / Native-like Expressions

17. 内緒だよ！ (Naisho da yo!) – “It’s a secret!”

Short and sweet, this is a very casual way to say “It’s a secret!”

Use it with close friends or younger people.

It’s playful and lighthearted.

Great for informal moments when you want to be fun.

Try saying it with a smile to keep it friendly.

Perfect for everyday secret-sharing among pals.

18. バラさないでよね (Barasanaide yo ne) – “Don’t spill the beans, okay?”

バラす (barasu) means “to reveal” or “to spill the beans.”

ないで (nai de) is “don’t,” and よね (yo ne) adds a friendly emphasis.

This phrase is very casual and commonly used by young people.

Perfect for playful teasing while asking for secrecy.

Use it to sound natural and native-like.

It’s a great phrase to add personality when chatting.

19. 黙っててね (Damatte te ne) – “Keep quiet, okay?”

黙る (だまる, damaru) means “to be silent.”

黙ってて (damatte te) is the casual -te form plus ね (ne) for softness.

It’s a simple and friendly way to ask someone to stay quiet.

Use this around friends or family.

It’s easy to remember and very natural.

Try it next time you want a low-key secret-sharing moment.

20. シークレットにしておいてね (Shiikuretto ni shite oite ne) – “Keep it secret, okay?”

シークレット (shiikuretto) is the English loanword “secret.”

にしておいてね (ni shite oite ne) means “please keep it that way.”

This phrase blends casual Japanese with a trendy English word.

It’s popular among younger speakers and informal settings.

Use it for a fun, modern twist on secrecy.

Perfect for sounding cool and casual.

21. ヒミツだよ、絶対ね (Himitsu da yo, zettai ne) – “It’s a secret, absolutely!”

This phrase combines the word for secret (ヒミツ) and a firm “absolutely” (絶対, zettai).

It’s casual but with a strong emphasis on keeping the secret.

Use it with friends to stress the importance playfully.

It’s easy to say and memorable.

Great for moments when you want to be both casual and serious.

Try this to sound natural and trustworthy.

22. ここだけの秘密ね (Koko dake no himitsu ne) – “Just a secret between us.”

ここだけの (koko dake no) means “just here” or “only between us.”

秘密 (himitsu) means “secret,” and ね (ne) softens it.

This phrase feels intimate and personal.

Use it to build a bond of trust with a friend.

Perfect for casual but meaningful secret-sharing.

It’s a beautiful phrase to keep close to your heart.

Concluding Thought

Exploring these 22 ways to say “Can you keep a secret?” in Japanese opens up a world of nuance and connection.

From casual whispers to polite requests, each phrase has its place in deepening your relationships and mastering Japanese culture.

So go ahead, try them out, and enjoy the special moment of trust that sharing a secret brings!