The retirement plan, intended to save money, had raised concerns about the impact on the school of an unprecedented loss of seasoned leadership.

Was that the reason for Spock's unprecedented loss of self-control?

In the present case, hurricanes in America had led to unprecedented losses for insurers.

In 2008, Lehman faced an unprecedented loss to the continuing subprime mortgage crisis.

Like other experts, Ms. Chanes said that even large companies in the area might not have had enough insurance for "this unprecedented loss."

In these weeks that follow unprecedented loss, a sense of regret at seeing other symbolic markers disappear (again) is understandable.

It was an unprecedented loss for Israel, which depends on armored vehicles to patrol the occupied territories.

But Apple, reeling from unprecedented losses, has been struggling to stay independent.

The Colorado below the dam would be reduced to a trickle, causing unprecedented loss of riverine life.

The work was first published in 1934, following unprecedented losses on Wall Street.