"To have it just explode in the air is completely unheard of," said the spokesman, Tom Cole.

Why, Nynaeve had never been a novice at all, and that was completely unheard of.

I'm not up on previous cases, but I'm positive that a score of a hundred percent is completely unheard of.

But a female wizard is something completely unheard of on the Discworld.

It was rare, though not completely unheard of, for him to leave his air car in the field.

That ratio, of course, is not completely unheard of - musicals are the industry's moneymakers and have long dominated Broadway.

"This was completely unheard of," said Davis in the Coan book.

But being completely unheard of in your own industry will mean you're not very successful, I suppose.

That was not completely unheard of in the Empire, but... almost.

That was completely unheard of in the '30s - a bunch of men dancing together?