Verb

(en verb)

To keep safe; to defend; to guard; to prevent harm coming to.

* {{quote-magazine, date=2012-03

, author=William E. Carter, Merri Sue Carter , title=The British Longitude Act Reconsidered , volume=100, issue=2, page=87 , magazine= citation , passage=But was it responsible governance to pass the Longitude Act without other efforts to protect British seamen? Or might it have been subterfuge—a disingenuous attempt to shift attention away from the realities of their life at sea.}}

Verb

(en verb)

To put (someone or something) in danger; to risk causing harm to.

* 1593, William Shakespeare, Two Gentlemen of Verona

I hold him but a fool that will endanger / His body [in a duel] for a girl that loves him not

* Burke

All the other difficulties of his reign only exercised without endangering him.

* 1877, Louisa May Alcott, Under the Lilacs

If you endanger other people's life and liberty in your pursuit of happiness, I shall have to confiscate your arms, boys.

(obsolete) To incur the hazard of; to risk; to run the risk of.

* Francis Bacon

He that turneth the humours back endangereth malign ulcers.