That’s what I want to know.

2024年7月18日

A: I heard that you’ve invested in ABC. Is that true?
B: Yes, but why?
A: That’s what I want to know. It’s a hopeless start-up!
B: Really?

In this situation, what should you say “That’s what I want to know” in Japanese?

Business

A：むしろこっちが聞ききたいですよ。そこは見込みこみのないスタートアップですから。

Note: This is not a word-for-word translation.

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A word-for-word translation

A：それは私わたしが知しりたいことですよ。望のぞみのないスタートアップですよ。

In Japanese, we usually use 聞きく (to ask) instead of 知しる (to know) in this situation.
In this case, 聞きく means ‘to ask’, not ‘to listen’ or ‘to hear’.

You may have learned that ‘to ask’ is translated as 尋たずねる, but 尋たずねる is not used even in business situations because it is too formal for conversation.

For example,
May I ask you some questions?

いくつかお聞ききしてもいいですか

Using 聞きく is fine when you ask anyone within your workplace.
I mean you could say this to your boss as well.

望のぞみのない is also understandable and a natural expression.
But 見込みこみのない is better and more common.