uncharted waters
murky waters

To tell the truth, we are in uncharted waters here.

They're in uncharted waters and may not see the way out.

But, I used to tell myself, these are uncharted waters.

But because we are in uncharted waters, it is hard for anyone to be sure.

Nothing therefore should be taken at face value as we head into uncharted waters.

We both agree that we’re moving into uncharted waters on the family front.

We're testing some uncharted waters with the two older ones.

He said last week that the economy of Europe was in "uncharted waters".

Yet we are in uncharted waters, so here is the critique of the other side.

Since we are in totally uncharted waters, nobody really knows what is going to happen.

"For lack of a better term, we're making our way through uncharted waters."

Many more workers are hanging back, watching to see what will happen in these uncharted waters.

I don't know how they will do; that's really uncharted waters.

"But since such a sale is the result of a court order, you could be in uncharted waters."

"We're going into uncharted waters in terms of the economy," Scott said.

But these would be uncharted waters in an unstable year.

I was really amazed how they were taking this guy into uncharted waters.

England currently stand in uncharted waters on the international scene.

The approach means that scientists are now operating in uncharted waters.

British monetary policy, to say the least, is in uncharted waters.

“Bart’s in uncharted waters if you look at the last five years.

This season was special for pushing the boat in uncharted waters.

But this time they are heading into mostly uncharted waters.

"I think in the past I've used the words "uncharted waters" if we are going to get into that."

One never knows what sort of knowledge will prove useful in uncharted waters.