Definition
To make proof of a thing. A Latin term of medieval legal usage denoting the act of verifying, establishing, or producing evidence sufficient to confirm the existence or truth of a matter before a court or other legal authority.
Common Confusion
INVERITARE should not be confused with the broader common law concept of verification (as in a verified pleading or affidavit of verification). Modern verification requirements derive from procedural rules and statutes; INVERITARE is a term of medieval Latin legal usage that describes an older and more general obligation to establish proof. The conceptual overlap is real, but the terms are not interchangeable across different historical periods or legal systems.
Why It Matters in Research
INVERITARE is a term a researcher is unlikely to encounter outside of pre-modern legal texts, Latin maxims collections, or glossaries appended to early common law treatises. Its practical significance is narrow but its presence in a primary source is a reliable signal that the document originates from or is heavily influenced by medieval or early modern legal drafting conventions, particularly those with civilian or ecclesiastical law roots.
Researchers working in ecclesiastical court records, canon law materials, or early equity proceedings may encounter the term in procedural contexts where a party was required to "inveritare" a claim — that is, to submit proof or verification rather than merely assert. The distinction matters because the obligation to inveritare carried specific procedural consequences distinct from a bare pleading.
The term appears only briefly in the major historical dictionaries and in every case traces back to the same authority: Jacob's Law Dictionary (Giles Jacob, various editions from 1729 forward). This single-source dependency means researchers should treat all dictionary definitions of INVERITARE as derivative of Jacob rather than as independently corroborated entries. No expanded discussion appears in later standard references, and the term does not migrate into American statutory or case law usage in any traceable way.
If you encounter INVERITARE in a document and need to understand its procedural context, the surrounding text — particularly whether it appears alongside terms like probatio, verificatio, or purgatio — will be more instructive than the dictionary definition alone.
Historical Dictionary Support
The three source dictionaries present a unified and terse account. Black's Law Dictionary (both editions) and Rapalje & Lawrence all define INVERITARE identically as "to make proof of a thing" and uniformly cite Jacob as the sole authority. There is no divergence among the sources and no elaboration.
What the historical dictionaries do not supply: any procedural detail about what "making proof" required in the contexts where the term was operative, which courts or proceedings employed it, or how it related to adjacent verification obligations in medieval practice. The definitions are taxonomic rather than functional — they tell researchers what the word means in English but not what it required in practice.
Jacob's Law Dictionary itself, as the originating source, treats the term briefly, consistent with its role as a Latin term of art that had largely receded from active use even by the early eighteenth century. The successive reproduction of Jacob's definition in Black's and Rapalje & Lawrence reflects standard lexicographic practice of the period rather than independent research into the term's legal history.