Definition
A trial that ends without a verdict, through no fault, contrivance, or management of the parties. The court proceedings begin but terminate before reaching a proper conclusion — typically because of some supervening circumstance, procedural failure, or external event that makes continuation impossible or improper. The defining feature is that the outcome is not engineered by either side: it is a failure of the proceeding itself, not a strategic maneuver.
The term most commonly appears in older case law and treatises. In modern practice, the same situation is ordinarily described as a mistrial, though the two terms are not perfectly interchangeable.
Common Language
Modern common usage (Wiktionary): "Abortive" means failing to produce the intended result; coming to nothing; unsuccessful. A trial that is abortive is, in plain English, simply one that did not complete or succeed.
Historical common usage (Webster's 1913): "Abortive" carried the sense of something that miscarries or fails before coming to fruition — derived from its literal biological meaning of a premature birth or failed development.
The gap between common and legal meaning here is narrow but consequential. Ordinary usage treats "abortive" as a synonym for any failure. The legal term is more precise: it excludes failures caused by the parties themselves. A mistrial engineered through misconduct by counsel, or a deliberate procedural maneuver to abort proceedings, is not an abortive trial in the technical sense — even though colloquially it might be called one.
Common Confusion
ABORTIVE TRIAL vs. MISTRIAL: These terms overlap substantially but are not synonyms. "Mistrial" is the modern procedural term and encompasses a broader range of situations, including those arising from juror misconduct, prejudicial error, or hung juries. "Abortive trial" specifically excludes situations caused by the fault or contrivance of the parties — making it a narrower concept. Researchers encountering "abortive trial" in historical sources should not automatically substitute "mistrial" without considering whether the causation element was at issue.
ABORTIVE TRIAL vs. NOLLE PROSEQUI: A nolle prosequi is a formal prosecutorial decision to abandon a case — an intentional act by a party. An abortive trial is the opposite: termination without verdict that occurs absent party fault. Conflating the two can distort analysis of double jeopardy questions, where the cause of termination matters significantly.
Why It Matters in Research
The term is primarily a creature of historical legal literature. Researchers working in 19th-century case reports, Irish and English common law materials, or early American treatises will encounter it with some frequency. It appears rarely in modern American judicial opinions, where "mistrial" has displaced it almost entirely.
The causation element — no fault, contrivance, or management of the parties — is not decorative. In double jeopardy analysis, whether a prior trial was aborted through party fault or through neutral circumstance can determine whether a subsequent prosecution is barred. Courts historically used "abortive trial" to signal that jeopardy had attached and the termination was involuntary, making retrial a constitutional question. Researchers tracing double jeopardy doctrine through historical sources need to be alert to this usage.
The Irish law reports (Jebb & Bourke, cited in all three dictionary sources as "Jebb & B. 51") are the anchor citation across every historical dictionary entry for this term. Researchers seeking the origin of the definition should consult that source directly rather than treating the dictionary entries as independent authorities — all three are drawing from the same upstream case.
Jurisdictional variation in historical usage is modest, but researchers should note that English and Irish courts developed this terminology in a common law context that American courts then adapted. The constitutional overlay of the Fifth Amendment Double Jeopardy Clause gives the American version of this concept a distinct legal valence not present in the original English usage.
Historical Dictionary Support
Black's Law Dictionary (1st and 2nd editions) and Bouvier's Law Dictionary are in near-perfect agreement on this term — all three definitions are functionally identical, and all three cite the same source: Jebb & Bourke at page 51. This unanimity is a signal that the term had a settled, narrow meaning in 19th-century legal usage and that the dictionary compilers were not independently developing doctrine but reproducing an established formulation.
What the historical dictionaries do not address: the double jeopardy consequences of an abortive trial, the distinction between abortive trial and hung jury (a specific and common subtype), or how the concept maps onto the modern mistrial framework. Researchers relying solely on these entries will get the definition but not the doctrinal stakes. The historical sources also do not address what qualifies as "fault, contrivance, or management" — a question that generated considerable litigation and that the dictionaries treat as self-evident.
Jurisdictional Note
The term appears across English, Irish, and American common law sources but is largely obsolete in modern American practice. Courts applying double jeopardy analysis today use the mistrial framework rather than the abortive trial terminology, though the underlying causation inquiry — was the termination the fault of a party? — remains doctrinally relevant.
Encyclopedia Cross-Reference
Bench Trials (The Law Mind Criminal Law Encyclopedia)
Right to Speedy Trial: Sixth Amendment and Speedy Trial Act (The Law Mind Criminal Law Encyclopedia)