1. to be present in large numbers in a way that is harmful or unpleasant
Usage: third person singular present tense of ‘infest’

Examples

• The old house infests with termites every summer.
• A computer virus infests the entire network within hours.
• The garden infests with aphids if not properly maintained.
• Poverty infests many urban neighborhoods.
• The lake infests with algae during hot weather.
• Crime infests the downtown area after dark.