What does exterminator mean?
An exterminator is a person whose profession is eliminating pests — typically insects, rodents, and other unwanted animals — from homes, businesses, and other buildings. The role usually involves inspecting premises for infestations, applying pesticides or setting traps, sealing entry points, and advising occupants on how to prevent future problems. In everyday speech, calling 'the exterminator' is a common shorthand for bringing in professional pest control, and the word carries no strong emotional charge: it is practical, slightly informal, and instantly understood. More formal job titles include 'pest control technician' or 'pest management professional', which emphasize the modern industry's broader focus on prevention rather than outright killing. Etymologically, the word derives from Latin roots meaning to drive something out beyond a fixed boundary, giving it a vivid underlying image of expulsion. Whether dealing with termites, bed bugs, cockroaches, or rats, the exterminator occupies a small but essential niche in maintaining healthy living environments.
nounA person whose job is to destroy pests, especially insects and rodents, in buildings or other areas; an agent of pest control.
- A person employed to eliminate pests such as insects and rodents from buildings.
"We had to call an exterminator after discovering termites in the basement."
"After weeks of scratching noises in the walls, we finally called a professional exterminator."
"The hotel hired a new exterminator to deal with its recurring bed bug problem."
Regular plural, formed by adding -s.
"Two exterminators spent the entire afternoon treating the office building for cockroaches."
The word exterminator literally means 'one who drives out beyond the boundaries' — from Latin terminus, the boundary stone.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of exterminator
Exterminator comes from the Latin verb exterminare, formed from ex- ('out') plus terminare ('to bound or limit'), itself derived from terminus, meaning a boundary marker or limit. The original Latin sense was 'to drive out beyond the boundaries' or 'to banish,' which later shifted toward 'to destroy utterly' as the word passed into English in the late sixteenth century alongside its parent verb exterminate. It shares this root with words such as terminate, terminal, terminus, and determine, all of which trace back to the same Latin notion of a fixed end or boundary.
Related word forms
How exterminator is actually used
Common and neutral in everyday American English, especially in domestic contexts. In more formal or commercial contexts, 'pest control technician' or 'pest control professional' is often preferred.
Easily confused with exterminator
An exterminator destroys pests, whereas an extinguisher is a device used to put out fires.