1. in danger of harm, extinction, or adverse consequences
2. having received a threat or warning of harm

Examples

• The threatened species requires immediate protection.
• Many coral reefs are threatened by climate change.
• The witness felt threatened after receiving anonymous calls.
• Threatened by the storm, residents evacuated the coastal area.
• The company’s profits are threatened by new competition.
• She reported feeling threatened by her neighbor’s behavior.
• The threatened closure of the school upset parents.