"How about that," he said, then made the unfortunate mistake of looking down.

It is only to be expected that so young a man should make unfortunate mistakes.

I can see now that was an unfortunate mistake.

Do you think these events are unfortunate mistakes which seem to happen to him with uncanny frequency?

I don't want him suffering, imprisoned, cut off from his life because of a perfectly natural and unfortunate mistake.

I am sure it is much appreciated, But there was an unfortunate mistake about the message he sent me.

This is an unfortunate mistake that has confused many students over the years.

Was that an unfortunate mistake or a crime which would be licensed under the future Treaty?

Moreover, there was an unfortunate mistake in the vote on the Schaffner report.

You were an unfortunate mistake, an error in history, that I will put right at the first possible moment.