To kill or otherwise permanently eliminate all of (a population of pests or undesirables), usually intentionally.
We'll use poison to exterminate the rats.
To bring a definite end to; to finish completely.
The public school failed to exterminate truancy.
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”) + ...
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