1. a person who needlessly alarms others or spreads frightening rumors about danger

1. creating needless worry or panic about possible dangers

Examples

• Critics called him an alarmist for predicting economic collapse.
• The newspaper was accused of alarmist reporting about the flu outbreak.
• Don’t be such an alarmist – the situation isn’t that serious.
• Her alarmist warnings about technology proved to be exaggerated.
• The scientist rejected claims that his research was alarmist.
• Alarmist headlines often grab more attention than balanced reporting.