menace
Definitions
A person or thing that is likely to cause harm; a threat or danger.
A threatening quality, tone, or atmosphere.
An annoying or troublesome person, especially a child.
Examples
The stray dog became a menace to the neighborhood by chasing cars and barking at pedestrians.
Rising sea levels pose a significant menace to coastal communities around the world.
He spoke with a tone of menace that made everyone in the room feel uneasy.