But the most serious menace, he said, lies at home.

This in itself is already sufficient to constitute a serious menace to the intellectual freedom of the nation.

It was regarded as a serious menace by the US officials.

They were both becoming a serious menace to the Forest People.

They know no terrestroid race could ever become a serious menace to them.

At its very best it would not be of much power or a serious menace to our work.

That was how close they were to being a serious menace.

French privateers were a serious menace to the small colony.

Out of the sky came another really serious menace.

TO such beings, what could possibly be a serious menace?