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Daily · Japanese

How to say “i don't know” in Japanese

Practice this phrase

i don't know

Japanese · 日本語

polite

Translation

わかりません

Romanization

Wakarimasen

Pronunciation

wah-kah-ree-mah-sen

When to use it

Use this in everyday conversation. These phrases are generally safe for work, travel, and casual interactions. In Japanese, tone and relationship matter; when unsure, choose a polite version or soften your delivery.

Example

わかりません — a natural sentence for ordinary conversation for "i don't know".

Same situation

Use these with i don't know in Japanese

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FAQ

Common questions

How do you say "i don't know" in Japanese?+

You say "わかりません" in Japanese. The romanized form is "Wakarimasen", and a simple pronunciation cue is "wah-kah-ree-mah-sen".

Is this phrase formal or casual?+

This entry is marked as polite. The usage note explains when the phrase is appropriate and when you should soften it.

How do you pronounce it?+

Use "wah-kah-ree-mah-sen" as a learner-friendly pronunciation cue. The romanization is "Wakarimasen".

When should I use it?+

Use this in everyday conversation. These phrases are generally safe for work, travel, and casual interactions. In Japanese, tone and relationship matter; when unsure, choose a polite version or soften your delivery.