Thus, they cannot be detected by other animals that threaten them.
(Rev. Martin Luther) King and his supporters were threatened.
There are dangers that threaten both men and women.
That country has openly threatened to go nuclear.
It will threaten the prosperity of the town.
The sky looks threatening.
It threatens to rain.
The sky had become threatening before I got to the station.
The volcanic eruption threatened the village.
The weather is threatening