Definition
Purging a tort is the retroactive cure or validation of a wrongful act by the subsequent authorization of that act — specifically, by a person who had the legal authority to have performed the act lawfully in the first place. Where an act was initially unauthorized and therefore tortious, it is "purged" when the party with authority to sanction it later ratifies or validates it. The effect is to strip the act of its wrongful character, even if that authorization comes after the fact.
The doctrine operates most commonly in the context of trespass and conversion, where an agent or third party acts without authorization, and the principal subsequently adopts the act. Unlike ordinary ratification, purging a tort does not require that the validation occur before litigation commences — the wrong may be purged even after an action has been filed.
Common Confusion
PURGING A TORT vs. RATIFICATION: The two doctrines are closely related and are often described in nearly identical terms. Both involve subsequent approval of an initially unauthorized act. The critical distinction lies in timing: ratification, as a general contract and agency doctrine, typically must precede legal proceedings to bind parties and defeat a claim. Purging a tort relaxes this constraint — the purge can occur mid-litigation, potentially neutralizing a pending action. Researchers should not assume that references to "ratification" in historical tort contexts carry the same procedural implications.
Why It Matters in Research
This term appears rarely in modern legal materials, which makes it easy to miss its significance when reading older common law sources. Researchers working in 19th-century English or American tort law — particularly in trespass, trover, or conversion — will encounter the phrase in circumstances where modern doctrine would simply say "subsequent ratification." The distinction in timing (post-suit purging being valid) is doctrinally significant and is not always flagged clearly in older treatises.
The term belongs to a cluster of agency-adjacent tort concepts that blurred the line between contract ratification and tortious authorization. If you are researching the history of vicarious liability or the principal-agent relationship in tort, purging a tort marks an important transitional concept — one that treated wrongful acts as correctable by authority, not merely excusable by consent.
Be cautious when comparing English and American sources: American courts varied in their willingness to allow post-commencement purging, and some jurisdictions collapsed the distinction between ratification and purging entirely. The doctrine largely disappeared from explicit discussion as agency law became more systematized in the late 19th and early 20th centuries, absorbed into broader ratification frameworks.
Historical Dictionary Support
Both Rapalje & Lawrence and Bouvier's Law Dictionary offer nearly identical definitions — in fact, the entries are so close as to suggest direct derivation from a common source, likely the English case law underlying both. Both sources anchor the doctrine in Hull v. Pickersgill, 1 Brod. & B. 282, an English decision that remains the primary authority cited for the timing distinction.
The consistent framing across both dictionaries — defining the doctrine by analogy to ratification before distinguishing it — reveals how the legal community of the period understood the term: not as a standalone doctrine but as a qualified variant of ratification, notable chiefly for its procedural flexibility. Neither source attempts a broader theoretical explanation of why post-commencement purging should be permitted, nor do they survey jurisdictional variation.
What the historical dictionaries miss: neither source addresses whether purging a tort extinguishes damages already accrued before the purge, or whether it operates only prospectively. This gap matters for researchers trying to assess the practical effect of the doctrine on damages calculations in historical cases.
Jurisdictional Note
The doctrine emerged from English common law, and its reception in American jurisdictions was uneven. Some American courts adopted it wholesale; others treated it as indistinguishable from ratification and applied the standard pre-suit timing rule. Researchers should not assume the English formulation controls in any given American jurisdiction without checking local authorities.