dangerous

adj

1. Full of danger.

   “Railway crossings without gates are highly dangerous.”

   “[I]t is not fair of you to bring against mankind double weapons! Dangerous enough you are as woman alone, without bringing to your aid those gifts of mind suited to problems which men have been accustomed to arrogate to themselves.”

   “Young Indians looking for work opportunities have made up a sizeable portion of undocumented migrants in the US, many after making the dangerous trek through Latin America to reach the US southern border.”

2. Causing danger; ready to do harm or injury.

   “If they incline to think you dangerous, / They have their knaviſh Arts to make you ſo.”

   “And the Duke thought: The truth could he worse than he imagines, but even dangerous facts are valuable if you’ve been trained to deal with them. And there’s one place where nothing has been spared for my son—dealing with dangerous facts.”

3. (colloquial, dated)In a condition of danger, as from illness; threatened with death.