infest

Imagine an old pirate ship with rats in every dark corner. If rats infest the ship, they have spread through it in large numbers and turned it into a real problem. "Infest" usually describes insects, animals, or other unwanted things filling a place so heavily that they are hard to control. It is more than just seeing a few ants or weeds. It suggests a place has been badly taken over.

You will often hear the word for pests in houses, fields, gardens, or animals. A house can be infested with termites, a field can be infested with locusts, and a dog can be infested with fleas. The word can also be used in a figurative way for something harmful spreading everywhere, but the literal use is much more common.

To infest means to invade or overrun a place or thing in large numbers, typically with something considered harmful, unwanted, or troublesome. It's more than just a presence; it implies a significant and often unwelcome population taking hold. For example, saying a house is "infested with termites" paints a picture of widespread damage and a difficult problem to solve.

Originally, "infest" carried the sense of attacking or harassing, but over time it developed its modern negative connotation of a pervasive, troublesome presence. While you might say a forest is inhabited by deer, you'd likely say it's infested with mosquitoes!

The word can be used literally to describe pests like insects, rodents, or parasites taking over a physical space. However, it also works figuratively. You could say "Fear infested his mind," meaning he was consumed by frightening thoughts. Or "Rumors infested the town," suggesting gossip spread quickly and uncontrollably.

"Infest" often implies a sense of helplessness or difficulty in getting rid of the unwanted presence. It's not just about having something; it's about being overwhelmed by it. Think of a swarm of locusts descending on a field—that's a true infestation! So, when you hear "infest," picture an unwelcome takeover, whether physical or mental, and a situation that needs to be dealt with urgently.