infest

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.