Definition
To criminate is to charge a person with a crime, to furnish evidence tending to prove the commission of a criminal offense, or to expose a person to criminal prosecution. The term operates in two related but distinct directions: (1) externally, when one person or piece of evidence implicates another in criminal conduct; and (2) reflexively, when a witness's own testimony would expose that witness to criminal liability — the core context in which the term most frequently appears in legal sources.
The reflexive sense is primary in legal usage. A witness cannot be compelled to answer any question that has a tendency to criminate him — that is, to furnish a basis, however partial, for criminal proceedings against himself. This principle is the foundation of the privilege against self-incrimination, and the verb "to criminate" functions as the operative word in much of the traditional formulation of that privilege.
Common Language
Modern common usage (Wiktionary): To accuse someone of a crime; to incriminate. Also, in less common usage, to rebuke or censure someone.
Historical common usage (Webster's 1913): To accuse of or charge with a crime; to involve a person in a crime or its consequences, rendering them liable to criminal charge.
The common and legal meanings are close but not identical. Ordinary usage treats "criminate" as roughly synonymous with "accuse." Legal usage carries a more precise functional meaning: it describes the act of furnishing evidence or grounds for prosecution, which may occur without any formal accusation at all. A witness's truthful answer on the stand can criminate him even if no one in the courtroom intends it as an accusation. The legal concept is evidentiary, not accusatory.
Common Confusion
"Criminate" and "incriminate" are used interchangeably in modern legal writing, but historical sources — including Bouvier and Burrill — consistently use "criminate" as the operative term in witness privilege doctrine. "Incriminate" became the dominant form in twentieth-century usage. Researchers encountering historical privilege cases and treatises should recognize "criminate" and "self-crimination" as the period-appropriate equivalents of "incriminate" and "self-incrimination." The older form has not changed meaning; it has simply been displaced by its prefixed variant.
Why It Matters in Research
The chief research value of understanding "criminate" precisely is navigational. Before the twentieth century, privilege against self-incrimination doctrine was written almost entirely in terms of "criminating" testimony — whether a question had a tendency to criminate the witness. Researchers reading eighteenth- and nineteenth-century case reporters, chancery records, or treatises will encounter this formulation constantly and must recognize it as the doctrinal predecessor to modern Fifth Amendment and analogous state-law self-incrimination analysis.
The tendency test is critical. Historical sources do not require that the answer would certainly result in prosecution — only that it tended to furnish a ground for one. This is a lower threshold than many researchers expect when working backward from modern doctrine. Bouvier's formulation (exposure to "a penalty, or to any kind of punishment, or to a criminal charge") is broader than a narrow reading might suggest, and the authorities he cites span English state trials and early American state decisions from multiple jurisdictions. Researchers working in pre-Civil War state court records will find that the privilege was recognized widely but applied variably; the term "criminate" is the flag that marks those applications.
Additionally, "criminate" appears in contexts beyond witness privilege — including early discussion of evidence law, confessions doctrine, and coerced statements. Its presence in a historical document is a reliable signal that the passage engages with what modern lawyers call privilege or self-incrimination doctrine.
Historical Dictionary Support
The five historical dictionaries are in substantial agreement. All define "criminate" by reference to criminal exposure or evidence tending toward criminal prosecution, and all anchor the term in witness privilege doctrine with near-identical formulations: a witness cannot be compelled to answer a question tending to criminate him.
Bouvier offers the most expansive treatment, extending the protection to exposure to penalties and punishments generally, not just to criminal charges narrowly defined. This breadth matters: it suggests that historical practitioners understood the privilege to cover civil penalties with quasi-criminal character, a point that occasionally resurfaced in twentieth-century Fifth Amendment litigation.
Rapalje and Lawrence are notably spare, treating the term almost entirely through the witness privilege lens without elaborating on the external (accusatory) sense of the word. Burrill is similarly brief. Black's (both editions) echoes Burrill's formulation and adds a reference to New Jersey and Virginia authority, providing a small window into how the term was operationalized in reported decisions.
None of the historical dictionaries address the procedural mechanics of invoking the privilege — how a witness asserted the right, whether the court examined the question in camera, or what happened when the claim was contested. Researchers should not expect those dictionaries to serve as procedural guides; they establish meaning and foundational principle only.
Jurisdictional Note
The privilege against self-crimination (or self-incrimination) existed at common law independently of any constitutional provision, and American courts recognized it across jurisdictions well before the Fifth Amendment's application to the states was settled. However, the precise scope of what "tended to criminate" varied by court and era. Researchers should not assume uniform application across state courts, particularly in the antebellum period.