exterminate
v.v. to kill all the members of a group of animals or insects. It is a strong word often used when talking about getting rid of pests or, in history, about killing a whole group of people.
v. to destroy or kill all members of a species or group. Often carries a strong connotation of total annihilation, frequently used in biological contexts regarding pest control or in historical contexts regarding genocide.
The farmer used a special spray to exterminate the locusts.
The government launched a campaign to exterminate the invasive species that were destroying the local crops.
Borrowed from Latin exterminātus, perfect passive participle of exterminō (see -ate (verb-forming suffix)), from ex- (“thoroughly”) + terminō (“to finish, close, end”), from terminus (“limit, end”) + -ō (verb-forming suffix).