Infestation: meaning, definitions and examples

When talking about an unwanted presence of insects or animals in a place, often implying a severe and out-of-control condition. It's commonly used in contexts of pests.

• The old house was closed down due to a termite infestation.
• The dog's fur showed signs of flea infestation.

Used to describe an unwelcome or forceful entry, often associated with military action or significant disruptions. Can have a negative connotation.

• The country prepared for a potential invasion by neighboring forces.
• The privacy invasion by the paparazzi was overwhelming.

Describes a situation where there is a widespread of harmful events, often diseases or pests, with a strong negative connotation.

• The medieval village was devastated by a plague of locusts.
• In the past, Europe was hit by the plague, causing millions of deaths.

Usually refers to a large group of insects moving together. Can also be used metaphorically to describe crowds of people or things moving together.

• A swarm of bees approached the blooming flowers.
• As soon as the doors opened, a swarm of shoppers rushed inside the store.

When describing a large number of people or things arriving at the same time, often in a neutral or positive context. Not typically used for pests.

• The city witnessed an influx of tourists during the holiday season.
• The park saw an influx of migratory birds in spring.