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Synonym Nuance VS

How to say "Secret" in Japanese

Both words can translate to "secret", but which should you choose?

Japanese Option A

内緒

ないしょ (naisho)
N3 / CEFR Syllabus
VS
Japanese Option B

機密

きみつ (kimitsu)
N2 / CEFR Syllabus

Nuance Contrast & Translation Difference

When translating "secret" into Japanese, you must choose carefully between 内緒 and 機密. In Japanese, 内緒 (ないしょ (naisho)) is typically associated with "secret" (Syllabus Level: N3) and represents Often used in the phrase「内緒にする」. On the other hand, 機密 (きみつ (kimitsu)) maps to "secret, classified (information)" (Syllabus Level: N2) and represents Refers to highly sensitive information that must be kept confidential, often in government, military, or corporate settings. 外部に漏らしてはならない重要な秘密の情報。. A literal translation of "secret" can often sound unnatural to native Japanese speakers if mixed up!
Bilingual Context for "内緒"
これは私たちだけの内緒だよ。
This is just between us, it's a secret.
Bilingual Context for "機密"
これは国家の機密情報です。
This is classified national information.

Nuance Mastery Quiz

Which Japanese word perfectly fits this blank space?

Fill in the blank: "これは私たちだけの ___ だよ。" (Meaning: "This is just between us, it's a secret.")
🎉 Correct Answer!

Remember: "内緒" fits here because it means "secret" in the context of: "This is just between us, it's a secret.". "機密" represents "secret, classified (information)".

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