Overrun
Definition 1 of 5
Pro Tip 1/2
Rapid Expansion
Use 'overrun' to describe a quick and often unwelcome spread of something. After the storm, the town was overrun by ants.
Pro Tip 2/2
Negative Connotation
'Overrun' implies a negative impact of being overwhelmed by something. The holiday resort is overrun with tourists during peak season.