Definition
In old English law, a person accused of a crime who attempts to escape liability by turning the accusation back upon the accuser — that is, by charging the very person who brought the charge against him. The strategy is defensive in form but offensive in execution: rather than simply denying the accusation, the antithetarids asserts that the accuser is themselves guilty of the same or a related offense.
Common Confusion
ANTITHETARIDS vs. APPROVER: Black's itself draws the distinction, and it is the only distinction worth preserving. An approver, in old English law, was an accused person who confessed guilt and then informed upon confederates — turning King's evidence against others. The antithetarids does not confess and does not implicate third parties; instead, he directs his counter-charge specifically at the accuser. The approver expands the circle of accusation outward; the antithetarids collapses it back onto its source. Conflating these figures misrepresents the procedural dynamic in any early English criminal proceeding where either term appears.
Why It Matters in Research
This term appears almost exclusively in older English legal sources and is unlikely to surface in any modern primary authority. Researchers encountering it will find it in treatises on early English criminal procedure, where the mechanics of accusatorial process — who could accuse, who could be believed, and how credibility was contested — governed outcomes in ways fundamentally different from modern evidentiary frameworks. The term signals a procedural world in which the counter-accusation was itself a recognized legal maneuver, not merely an informal deflection.
The distinction between the antithetarids and the approver is the key navigational point in any source where the term appears: both figures occupy unusual positions in the accusatorial process, but they operate differently. Confusing them in a research context produces a misreading of the procedural posture of the accused. See COMMON CONFUSION below.
Because the term derives from Jacob's Law Dictionary (cited in Black's), researchers seeking fuller context should consult that source directly. Black's second edition entry is spare and derivative; it adds nothing beyond Jacob's formulation.
Historical Dictionary Support
Black's Law Dictionary (2nd Ed.) reproduces the Jacob's Law Dictionary definition almost verbatim, offering no elaboration, no case authority, and no statutory grounding. The definition is descriptive rather than operative — it identifies the figure by function (retorting the charge on the accuser) rather than by any formal procedural rule or recognized legal standard.
The absence of this term from later editions of Black's and from competing historical dictionaries reflects its extreme archaism. It describes a practice embedded in early English criminal procedure that had no continuing life in either common law development or statutory reform. Researchers should treat it as a period artifact rather than a term with living legal meaning.