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Japanese dictionary

How to say "why" in Japanese

なぜ · naze

"Why" in Japanese is なぜ (naze) or the softer どうして (dōshite). In casual speech, なんで (nande) is common.

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Ways to say "why" in Japanese

JapaneseWhen to use it
なぜ · nazeWhy (neutral).
どうして · dōshiteWhy (softer).
なんで · nandeWhy (casual).

How to use it

"Because" is 〜から (kara) or 〜ので (node).

Asking なんで to someone senior can sound like you're challenging them. Use どうして or ask about the reason: 理由を伺ってもいいですか.

Example sentences

Questions

What is the difference between なぜ, どうして and なんで?

なぜ (naze) is neutral and common in writing. どうして (dōshite) is softer in speech. なんで (nande) is casual.

How do you say "because" in Japanese?

Use から (kara) or ので (node) after the reason: 忙しいので行けません (I can't go because I'm busy).

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