Definition
Double pleading is a procedural defect in common law pleading in which a single pleading asserts multiple distinct grounds, facts, or answers where only one is permitted. The rule operated in two directions:
1. As applied to declarations (complaints): A plaintiff could not allege several independent grounds or facts in support of a single demand when any one of those grounds, standing alone, would be sufficient to sustain the claim. The declaration had to rest on a single, unified basis.
2. As applied to subsequent pleadings (pleas, replications, rejoinders): A party could not offer multiple distinct answers to the preceding pleading. Each responsive pleading was required to raise a single, definite issue rather than presenting several alternative defenses or replies simultaneously.
The animating concern in both cases was the same: double pleading multiplied issues, obscured the question actually in dispute, and frustrated the classical common law goal of reducing litigation to a single, clear issue of fact or law for the jury or court to resolve.
Common Confusion
Double pleading is sometimes loosely conflated with duplicity, alternative pleading, and surplusage, but these are distinct concepts. Duplicity is the broader category of which double pleading is a species — duplicity encompasses any pleading that joins more than one issue improperly. Alternative pleading, by contrast, is expressly permitted under modern civil procedure rules (Federal Rule of Civil Procedure 8(d)(2) allows parties to plead in the alternative), making much of the historical double pleading prohibition obsolete in modern practice. Surplusage refers to unnecessary matter in a pleading that does not create a second issue. A researcher encountering the term "duplicity" in historical sources should verify whether the source means the broader defect or the narrower double pleading rule specifically.
Why It Matters in Research
Double pleading is almost entirely a historical common law pleading doctrine. Researchers encountering the term in primary sources from before the mid-nineteenth century — particularly English common law materials and pre-Field Code American practice — should understand that the prohibition was a live procedural rule with real consequences: a pleading that doubled could be challenged by special demurrer.
The Field Code (New York, 1848) and its successors substantially dismantled the technical single-issue pleading system. The Federal Rules of Civil Procedure (1938) completed this transformation by expressly permitting alternative and hypothetical pleading. As a result, the double pleading prohibition has no direct modern counterpart in American federal practice and most state practice. Researchers reading nineteenth-century treatises, early American case reporters, or English common law materials must account for this doctrinal gap — a ruling that a pleading was defective for "double pleading" in 1830 cannot be read as reflecting contemporary procedural standards.
One trap in historical sources: Rapalje & Lawrence's entry signals that the rule was already softening at the time of that dictionary's compilation, noting that the strict prohibition had been modified. Researchers should not assume that pre-Code sources reflect a uniform or static rule — the doctrine was in flux across jurisdictions in the mid-nineteenth century. Check whether the source jurisdiction had adopted code pleading before relying on any characterization of the rule as absolute.
The term has essentially no relevance to modern criminal procedure despite superficial similarity to double jeopardy concepts. The two doctrines share no analytical framework.
Historical Dictionary Support
Black's Law Dictionary and Rapalje & Lawrence agree on the two-part structure of the rule — its application to declarations on one hand and to subsequent pleadings on the other — and both identify the same underlying rationale: preventing a single pleading from generating multiple issues in respect of a single claim. This consensus reflects the standard common law treatment drawn ultimately from Chitty, Stephen, and other classical pleading authorities.
Rapalje & Lawrence is the more candid of the two sources, expressly framing the rule as "the old rule" and signaling that legislative or procedural reform had eroded it by the time of publication. Black's entry, while structurally clear, presents the prohibition in a more timeless register that may overstate its currency for the period of publication. Neither dictionary engages meaningfully with the transition to code pleading or the implications for jurisdictions that had already adopted the Field Code — a gap researchers should fill by consulting treatises on common law pleading such as Stephen's Principles of Pleading or Shipman's Handbook of Common Law Pleading.
Jurisdictional Note
The double pleading prohibition was a feature of English common law pleading transplanted into American colonial and early state practice. Its force varied as states adopted code pleading at different times through the second half of the nineteenth century. In federal courts and the majority of states following the Federal Rules model, the doctrine is defunct. In any jurisdiction still operating under common law pleading rules (now rare), historical authorities would control.