英和和英

I have no clue.

I have no idea.

I don't know anything at all.

I don't know anything about ～ .

You're asking the wrong person.

I wish I can help you, but I don't know

I do not know well

I am not quite sure.

I don't know

I don't know

not made known

not known

I don't know either

I do not know for certain.

I do not know it at all

I don't know it at all

not informed

(of something to happen) without one's knowledge

Who knows?

God knows.

I did not know it

without knowing it

I do not know.

I do not know.

He is an utter stranger―a complete stranger―a perfect stranger―to me.

I didn't know that.

I wasn't informed of that.

Nobody told me.

I didn't know.

I was unaware.