Definition
A tortfeasor is a person or entity that commits a tort — that is, a civil wrong giving rise to liability in damages. The term applies equally to individuals, corporations, and other legal persons. It carries no implication of criminal wrongdoing; the conduct need only be wrongful in the civil sense, whether intentional, negligent, or the product of strict liability.
The term is most often used in the plural. A single tort may produce multiple tortfeasors, and much of the practical significance of the word lies in how courts allocate responsibility among them.
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Common Confusion
TORTFEASOR vs. DEFENDANT: Not every defendant in a tort action is properly called a tortfeasor until liability is established, but in practice courts and commentators use the term before adjudication, loosely meaning "alleged tortfeasor." Researchers should not treat the label as a finding of liability when encountered in procedural or pretrial contexts.
TORTFEASOR vs. WRONGDOER: "Wrongdoer" is the broader term and appears throughout equity, criminal, and statutory law. Tortfeasor is confined to civil tort law. Older sources sometimes use the two interchangeably; in modern usage the distinction matters when the governing legal framework is ambiguous.
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Why It Matters in Research
The term itself is simple; the complexity lies in the relationships among multiple tortfeasors. Researchers navigating the Law Mind corpus should track three distinct doctrinal regimes that the same word sits inside:
JOINT AND SEVERAL LIABILITY: Historically, joint tortfeasors were jointly and severally liable, meaning any one could be held for the full judgment. This rule has been modified or abolished in a majority of U.S. jurisdictions by tort reform legislation, often moving to proportionate fault systems. A source's treatment of tortfeasor liability tells you almost nothing useful unless you know when and where it was written.
CONTRIBUTION AND INDEMNITY: The right of one tortfeasor to recover from another — contribution — was denied at common law (a wrongdoer could not seek the court's assistance against a co-wrongdoer). Statutory contribution rights emerged in the twentieth century and transformed the landscape. Bouvier and Rapalje both cross-reference CONTRIBUTION; that entry is the essential companion to this one in the historical dictionaries.
VICARIOUS LIABILITY: Employers, principals, and others may be held as tortfeasors for conduct they did not personally commit. The word tortfeasor in older texts frequently signals a discussion of respondeat superior or agency. Researchers working in employment or agency contexts should follow that thread carefully.
HISTORICAL TRAP: Early common law treated joint tortfeasors as a nearly indivisible unit — one judgment against one barred suit against the others (the merger rule). Modern law has largely abandoned this. A nineteenth-century treatise discussing "the tortfeasor" in a contribution or contribution-bar context may be describing a rule that no longer exists anywhere.
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Historical Dictionary Support
Both historical dictionaries treat tortfeasor as a term of Norman-French origin (tort, a wrong + feasor/fesour, a doer) and define it straightforwardly as a wrongdoer or one who commits a tort, with particular emphasis on trespass. Rapalje & Lawrence note its specific application to trespass and cite Croke's Jacobean reports, locating the term in the early common law of direct wrongs. Bouvier gives the lean definition — "a wrong-doer; one who commits or is guilty of a tort" — and directs the reader elsewhere for substantive doctrine, which is consistent with Bouvier's general practice of treating relational terms as entry points rather than self-contained doctrine.
Neither dictionary addresses the multi-tortfeasor apportionment problem in depth under this heading, which reflects the state of the law at their respective dates of publication more than any editorial choice. The contribution and joint-liability doctrine that now dominates practical use of the term developed largely through statute and twentieth-century case law. Researchers who exhaust the tortfeasor entry in either historical dictionary and stop there will miss the most consequential doctrinal material.
Rapalje & Lawrence's fragment on special damage from public nuisance — appearing in the source material here as a truncated cross-reference — points toward the category of tortfeasors whose liability arises from breach of a public duty causing particular private harm. This is a distinct and historically significant subcategory that surfaces in nuisance and regulatory contexts.
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Jurisdictional Note
The shift from joint and several liability to proportionate fault allocation has occurred unevenly across U.S. jurisdictions. Some states retain pure joint and several liability; others have moved to pure several liability; many use hybrid approaches tied to the defendant's percentage of fault. The word tortfeasor means the same thing everywhere; what varies enormously is what follows from being one.
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Encyclopedia Cross-Reference
Vicarious Liability and Joint Tort Liability — Contribution Among Tortfeasors (Law Mind Torts & Personal Injury Encyclopedia) — directly addresses the multi-tortfeasor apportionment framework that gives this term most of its practical significance in modern research.
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