Having the quality or purpose of exterminating; tending to destroy or eliminate completely.
From exterminate + -ive (Latin -ivus, a suffix meaning 'tending to'). The suffix -ive describes the tendency or quality of an action.
The word 'exterminative' appears in old pest control advertisements that promised completely effective solutions—though modern environmentalists often debate whether 'exterminative' approaches are wise or necessary.
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