I would rather not say。

你可以说"I would rather not say." (还是别说了吧)。

youdao

I would rather not say.

我宁愿不说。

youdao

"I would rather not say just now," said Dumbledore. "However, I shall tell you in due course."

“目前我还不想说，”邓布利多说，“不过，以后在适当的时候我会告诉你的。”

youdao

That is rather sad,I would say." Bartuska is not alone.

VOA: standard.2009.11.17

But because Jill Carroll is not the daughter of famous people, it seems that we have rather, I would say, too easily just accepted this idea of not dealing with kidnappers and seem to be prepared to let her die.

NPR: The Morality of Negotiating with Kidnappers