Tort reform consists of changes in the civil justice system in common law countries that aim to reduce the ability of plaintiffs to bring tort litigation or to reduce damages they can receive. Such changes are generally justified under the grounds that litigation is an inefficient means to compensate plaintiffs; that tort law permits frivolous or otherwise undesirable litigation to crowd the court system; or that the fear of litigation can serve to curtail innovation, raise the cost of consumer goods or insurance premiums for suppliers of services, and increase legal costs for businesses. Tort reform has primarily been prominent in common law jurisdictions, where criticism of judge-made rules regarding tort actions manifests in calls for statutory reform by the legislature.

Defamation is a communication that injures a third party's reputation and causes a legally redressable injury. The precise legal definition of defamation varies from country to country. It is not necessarily restricted to making assertions that are falsifiable, and can extend to concepts that are more abstract than reputation – like dignity and honour. In the English-speaking world, the law of defamation traditionally distinguishes between libel and slander. It is treated as a civil wrong, as a criminal offence, or both.