have no parallel
be without parallel

The city and the counties pay for about 15 percent of the state's $44.5 billion program, an arrangement without parallel in any other state.

This, I believe, is an achievement without parallel in book production.

It is a concept that has been without direct parallel before or since.

And it was a disaster without parallel in the American experience.

This is a pattern of car ownership without parallel in the world.

This is, save for Nixon, without parallel in the history of the republic.

No, when I triumph, it will be at my leisure and without parallel.

I believe that the oppression of the Chinese people is without parallel.

In both cases, the magnitude involved was without historical parallel.

In a different sense it is without parallel, absolutely unique.