(transitive) To put (someone or something) in danger; to risk causing harm to. / (obsolete, transitive) To incur the hazard of; to risk; to run the risk of.

present participle of endanger

The act of putting someone or something in danger.

simple past tense and past participle of endanger

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)

Third-person singular simple present indicative form of endanger

plural of endangering

(biology) A species which is in danger of becoming extinct throughout all or a significant portion of its range. / A class or kind whose continued existence is threatened.

plural of endangerment

The act of putting someone into danger, or the condition of being in danger. / (law) The exposure of someone, especially a child, to danger or harm.