simple past tense and past participle of endanger
"The factory was endangered by a massive flood last summer, leaving its foundation in ruins."
In plain English: To be endangered means to face a serious risk of being harmed, hurt, or destroyed.
"The rising sea levels could eventually endanger coastal cities by causing severe flooding and erosion."
in danger, at risk, said of something where there is a strong possibility something bad will happen to it (for example, a species in danger of going extinct)
"The local population of monarch butterflies has become critically endangered due to the loss of their native milkweed habitats."
In plain English: Endangered means something is at serious risk of disappearing completely soon if nothing changes to protect it.
"The local wildlife is endangered because their habitat has been destroyed by pollution."
Usage: Use "endangered" specifically when describing people or things that face an immediate and serious threat of extinction or destruction. This term applies only to situations with a high probability of permanent loss, distinguishing it from less severe risks like being merely vulnerable.