Which one should you use?
While なるほど expresses agreement or realization, it is not a substitute for a polite "I understand" (such as 了解しました or 分かりました) in a professional context. You can also use the form なるほどね in casual speech, where adding the particle ね makes the expression sound more conversational and empathetic.
Is there a formal and an informal way to say it?
なるほど is an informal expression popularly used among friends to express genuine understanding. Because it is informal, you should use it with caution when speaking to superiors or in formal settings. For a more formal way to explicitly state "I understand that," you can use それはわかりました. Other informal alternatives include ああ、そうか for "Ah, I see" or the simple うん to acknowledge understanding or say "yes."
How do you pronounce it?
naruhodo
Did you know?
- Using なるほど with a superior can be perceived as 上から目線, which literally means 'looking from above'. It suggests the listener is judging the validity of the boss's logic.
- While English speakers say 'I see' to mean they understand, Japanese speakers rarely use a verb meaning 'to see' like 見る to express this same realization.
- While it means 'I see' today, the phrase originally comes from a combination of words meaning 'it is indeed so', emphasizing the truth of a statement rather than the listener's realization.
Examples in context
- なるほど、そういうことですね。Naruhodo, sou iu koto desu ne.Ah, I see, so that is how it is.
- なるほど、使い方がわかりました。Naruhodo, tsukaikata ga wakarimashita.Ah, I see, I understand how to use it now.
- なるほど、それは大変でしたね。Naruhodo, sore wa taihen deshita ne.Ah, I see, that must have been difficult.
Example conversation
Yui and Ren are discussing a new rule at their workplace.
- 結衣 Yui新しいルールは明日から適用されます。Atarashii ruuru wa ashita kara tekiyou saremasu.The new rule will be applied starting tomorrow.
- 蓮 Renなるほど、わかりました。Naruhodo, wakarimashita.Ah, I see, I understand.
- 結衣 Yui蓮さんも準備をお願いしますね。Ren-san mo junbi o onegaishimasu ne.Ren, please prepare as well.
- 蓮 Renはい、了解です。Hai, ryoukai desu.Yes, understood.
Sources
- Pronunciation: Wiktionary entry なるほど, CC BY-SA 4.0, dump of 2026-09-26.
