退治屋

Etymology
Compound of.

Noun

 * 1) an exterminator

Usage notes
Has Buddhist overtones, from the Buddhist sense of meaning “driving out evil”. By extension, this term is often used in fiction to refer to an “exterminator” of spiritual or supernatural problems. The literal underlying meaning of the kanji compound is +.

A more general term for an “exterminator” would be (as of a disease or a problem), while a more formal or business-like term for an exterminator of pests would be a. More specifically, an exterminator of insects would be a, and an exterminator of other animals would be a.