Rare, archaic: to endanger.
Definitions
To expose to danger; to imperil. The careless maintenance dangered the crew.
Used attributively before another noun to denote connection with danger.
Definitions
Relating to or involving danger; used attributively before another noun indicating that something entails risk. The miners received danger money for working underground.
Used as a warning label or shout.
Definitions
Used to warn people that there is a risk of harm nearby. Danger! Keep away from the edge.
Synonyms
Stand back!
Heads up!
Look out!
Watch out!