- threatened with a danger: endangered lives of trapped coal miners.
- generally perceived as threatened with extinction: In 1967, the U.S. government declared the bald eagle endangered, but the national bird’s population recovery since then has been remarkable.
- (of a threatened plant or animal species) having a very high risk of extinction, second only to the status of critically endangered, as categorized by the IUCN Red List: There are more than 3,600 endangered plant species throughout the world.Abbreviation: EN
- in danger: used esp of animals in danger of extinction
