A person who advocates for or practices the complete removal or eradication of something, especially a disease or pest.
Derived from extirpation with the agent suffix -ist, meaning 'one who does or believes in extirpation,' following standard English word formation patterns.
Interestingly, 'extirpationist' was a real label used in medical history—doctors who pushed aggressively for eradication of diseases like smallpox through vaccination were sometimes called extirpationists, representing an optimistic view that humanity could eliminate disease entirely.
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