Definition

To invade or occupy a place in large numbers, often causing harm or problems.

Example

The garden was infested with pests that damaged the plants.

Tense Forms

Conversation

Did you hear about the apartment complex that got infested with mice?

Yeah, that's so gross! I can't believe it happened.

I know, right? It's like they just took over the whole place.

I would be so freaked out if I had to deal with that!

Synonyms & Antonyms

Root Explanation

Infest is formed from "in-" (meaning in or into) and "festare" (from Latin, meaning to sit or dwell). The word describes the act of dwelling or settling in a place, often in a troublesome or harmful way, hence the meaning of being overrun or invaded by pests.

Memory Tip

Think of something settling 'in' ('in-') a place and causing trouble, which is what 'infest' means.

Visually Confused Words