What is the meaning of 'due diligence'?

The meaning of due diligence, under torts and damages, refers to the standard of care while performing any acts that could foreseeably harm others. It is the care or attention to a matter that is sufficient enough to avoid a claim of negligence, though not necessarily exhaustive. It also is the measure of prudence to be expected from, and ordinarily exercised by, a reasonable and prudent person under particular circumstances.