He has made one enormous mistake in his life.

I think it is an enormous mistake on their part.

Suddenly Mylikki realized just what an enormous mistake they had made.

"Then all this time we have been making an enormous mistake."

It's been an enormous mistake in the last few years to send a message of indifference.

I think this idea of ruling by consensus and keeping Republicans happy was an enormous mistake.

Instead of learning a lesson from this enormous mistake, I went right ahead and did the same thing again on a smaller scale!

"I don't understand how someone that good with numbers could make such an enormous mistake."

I believe that it would be an enormous mistake to change the definition of price stability.

In these difficult negotiations, France has made two enormous mistakes.