The piano's existence is almost completely unknown outside the college.

It was practically unknown outside Jewish circles until the end of 1860s.

These are neither peculiar to the police nor unknown outside the criminal process.

That role was once largely unknown outside the department and housing circles.

In 1939 they were still politically unknown outside their own little circle.

Many of these bankers are largely unknown outside their small financial circles.

The breed was quite unknown outside Hungary until the 1970s.

Although virtually unknown outside the country, it achieved a popular and critical success in Mexico.

Twenty years later, the director was still virtually unknown outside Canada.

But he is virtually unknown outside the film industry.