En·dan·ger v. t. [imp. & p. p. Endangered p. pr. & vb. n. Endangering.]
1. To put to hazard; to bring into danger or peril; to expose to loss or injury; as, to endanger life or peace.
All the other difficulties of his reign only exercised without endangering him. --Burke.
2. To incur the hazard of; to risk. [Obs.]
He that turneth the humors back . . . endangereth malign ulcers. --Bacon.
adj : (of flora or fauna) in imminent danger of extinction; "an