threatened
US /ˈθret.ənd/
UK /ˈθret.ənd/

1.
having a hostile or deliberately frightening quality or manner
:
•
His voice sounded threatened.
•
The dog had a threatened growl.
2.
(of a species or natural environment) subject to a threat or danger
:
•
Many species are threatened by habitat loss.
•
The rainforest is a threatened ecosystem.
1.
state an intention to take hostile action against someone in retribution for something done or not done
:
•
He threatened to call the police if they didn't leave.
•
The dark clouds threatened rain.