1. to enter forcibly or suddenly; to burst in
Usage: formal
2. to increase suddenly in numbers, especially of animal populations
Usage: ecology; biology

Examples

• The protesters irrupted into the building during the meeting.
• Armed guards irrupted through the doors without warning.
• The rabbit population irrupted after the harsh winter ended.
• Locusts irrupted across the farmland, destroying crops.
• Students irrupted into the classroom, excited about the field trip.
• The deer population irrupted when hunting was banned in the area.