At the time he called the legislation "part of a larger and more audacious effort to make the public accept behavior that most Americans consider dangerous, unhealthy or just plain wrong."

These are some of Mr. Shearer's most audacious efforts.

Free-PC.com, perhaps the most audacious effort to use the concept, decided that it could cover the cost of a computer by selling advertising on one-third of the screen.

It is an audacious effort by two of Mr. Chase's fans eager to prove their loyalty to his creation.

It impelled her to more audacious efforts.

The most audacious effort in generations to exalt the constitutional power of the President has been decisively turned back.

In an audacious effort under intense fire, Private Bert B. Zumberge attempted to rescue him.

Yet its audacious effort to purchase Telecom Italia represents one of the biggest hostile takeover attempts by any company.

This year, Senate Minority Leader Mitch McConnell accused President Obama and his allies of "an audacious effort to Europeanize the country."

The most audacious effort occurred in the mid-1970's, when the C.I.A. tried, unsuccessfully, to raise a sunken Soviet submarine from the bottom of the Pacific.