Definition of due diligence
1 law : the care that a reasonable person exercises to avoid harm to other persons or their property
failed to exercise due diligence in trying to prevent the accident
2 business : research and analysis of a company or organization done in preparation for a business transaction (such as a corporate merger or purchase of securities)
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Time Traveler for due diligence
The first known use of due diligence was in 1598
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