Definition
A procedural term with two related but distinct senses:
1. Leading to or producing an issue: Describes a plea, defense, or matter that is framed in such a way that the opposing party can join issue upon it — that is, take a position against it and proceed to trial on the merits. A plea is issuable when it presents a genuine factual or legal question capable of being contested and resolved.
2. Lawful or suitable to be issued: Describes a writ, order, or other legal instrument that is legally appropriate and procedurally proper to issue under the circumstances presented. A writ is issuable when the legal conditions authorizing its issuance have been satisfied.
In practice, the first sense dominates the historical sources and governs most appearances of the term in pleading and procedure contexts. The second sense appears primarily in discussions of writs and judicial process.
Common Language
Modern common usage (Wiktionary): Leading to, producing, or relating to an issue; capable of being made an issue at law. Also: lawful or suitable to be issued.
Historical common usage (Webster's 1913): Leading to, producing, or relating to an issue; capable of being made an issue at law. Also: lawful or suitable to be issued, as in a writ issuable on these grounds.
The common and legal meanings are close, but the legal term carries technical weight that ordinary usage does not. In law, "issuable" is not merely descriptive — it is a term of art signaling that specific procedural conditions have been met. A researcher encountering "issuable" in historical pleading documents should not read it as a casual synonym for "issuing" or "related to an issue" in the colloquial sense; it is a precise characterization of a plea's procedural posture.
Common Confusion
Issuable is sometimes loosely applied as though synonymous with "relating to an issue" in the broad sense — meaning simply relevant or connected to some disputed matter. This is an error. In its technical sense, issuable describes a plea or matter that is properly framed to permit the opposing party to join issue and go to trial. A plea in abatement, for example, may produce a subsidiary issue, but it is not an issuable plea in the classical sense because it does not go to the merits. The distinction between an issuable plea and a dilatory or abatement plea is significant in pleading practice and must not be collapsed.
Why It Matters in Research
Researchers working in pre-twentieth-century common law pleading materials will encounter "issuable" frequently, and its meaning turns entirely on context. The term functions as a procedural quality marker: when a court or treatise writer calls a plea "issuable," the reader is being told something about that plea's procedural status, not just its subject matter.
The key research trap is the term's deceptive accessibility. Because "issuable" resembles ordinary English, researchers may gloss over it without registering its technical force. In historical pleading records, an "issuable plea" is one upon which the plaintiff can take issue — meaning the plea is to the merits and the case can be set down for trial. Identifying whether a plea was characterized as issuable or non-issuable helps researchers trace how cases moved through the procedural machinery of common law courts.
The second sense — a writ being issuable — appears in discussions of mandamus, certiorari, injunction, and similar extraordinary remedies, where courts assessed whether legal conditions authorizing issuance were present. Researchers working on writ practice should note that "issuable" in this context is an implicit reference to the substantive prerequisites for the writ, not merely to the mechanics of its physical issuance.
Jurisdictional variation in early American materials is modest for this term, but the underlying doctrine of what constitutes an issuable plea tracks the general reception of common law pleading rules in each state. States that adopted code pleading earlier (mid-nineteenth century onward) gradually displaced the formal significance of the term.
Historical Dictionary Support
The historical sources are in close agreement on the core meaning. Black's (both editions), Bouvier's, and Burrill's converge on the same formulation: issuable means leading to or producing an issue, and an issuable plea is one upon which the adverse party may take issue and proceed to trial. Webster's 1913 echoes this directly, drawing on Burrill, and adds the second sense (lawful to be issued) with an explicit writ example.
Anderson's Dictionary of Law simply redirects to its entry for ISSUE, which is characteristic of that work's cross-reference style and adds nothing independent.
The Rapalje & Lawrence entry in the source material does not contain a definition of ISSUABLE — what appears is displaced content from an IRREGULARITY entry. Researchers should treat the Rapalje & Lawrence source as silent on this term.
Black's 2nd edition begins a more extended treatment of "issuable plea," noting that while a plea in abatement is technically a plea and may generate its own issues, the ordinary legal meaning of "issuable plea" is reserved for pleas to the merits. This nuance — that not every plea producing an issue is an issuable plea — is the most substantively useful point in the historical sources and aligns with the COMMON CONFUSION note above.
No historical source provides a definition that conflicts with another. The silence of some dictionaries on the writ-issuance sense suggests that sense was considered secondary or self-evident.
Jurisdictional Note
The technical significance of "issuable plea" is most pronounced in jurisdictions that retained formal common law pleading rules into the late nineteenth century. States that adopted the Field Code or similar procedural reforms after 1848 largely rendered the formal pleading vocabulary, including "issuable," obsolete in practice, though the term continues to appear in treatises and judicial opinions discussing pre-code procedure.