Definition
Acceptilatio (also spelled acceptilation) is a concept from Roman civil law referring to the formal verbal release of an obligation without actual payment. The debtor is discharged as though payment had been made, even though nothing was in fact transferred. The release was accomplished through a ritualized oral exchange in which the creditor acknowledged receiving what had not actually been received — a legal fiction of satisfaction. Because the obligation was created verbally (by stipulatio), it could be dissolved by the same verbal means.
Acceptilatio operated exclusively within the framework of verbal obligations. A debt arising from sale, loan, or other non-verbal transaction could not be extinguished directly by acceptilatio; to dissolve such debts, Roman jurists developed the stipulatio Aquiliana, a device that first converted the existing obligation into a verbal one, making it susceptible to release by acceptilatio.
Common Confusion
Acceptilatio is sometimes loosely treated as equivalent to a general release or a novation, but the terms are distinct. A release in modern law typically requires consideration or, in equity, detrimental reliance; acceptilatio required neither — its efficacy derived entirely from the formal verbal act. Novation substitutes a new obligation for the old; acceptilatio extinguishes the old obligation entirely, replacing it with nothing. Researchers encountering the term in historical sources should resist translating it directly into modern release doctrine without accounting for this formal-structural difference.
Why It Matters in Research
Acceptilatio appears almost exclusively in sources dealing with Roman law, civil law jurisdictions, and early common law texts influenced by civilian scholarship. It is rarely operative as living doctrine in Anglo-American courts, but it surfaces regularly in three research contexts.
First, historical treatises and early equity materials sometimes invoke acceptilatio when discussing the enforceability of gratuitous releases or the sufficiency of consideration for discharge. Writers working in the natural law tradition used it to illustrate the proposition that obligations could be dissolved by mutual consent without material exchange.
Second, Scottish, Louisiana, Quebec, and South African legal materials — all mixed or civilian systems — may use acceptilatio or its functional equivalents with continuing doctrinal weight. A researcher working in any of these jurisdictions should not assume the term is merely antiquarian.
Third, Bracton's treatment of acceptilatio (cited in Burrill at fol. 101) is a point of contact between Roman sources and early English legal thought. Researchers tracing the history of discharge of contract doctrine in English law will encounter the concept here, though the common law ultimately developed distinct mechanisms that largely displaced it.
The spelling variant acceptilation (without the final -o) appears in some English-language sources, including Bouvier. Cross-searching both forms is advisable when working with older digests and indexes.
Historical Dictionary Support
Bouvier and Burrill agree on the core concept — a verbal, fictitious release of an obligation — but approach it from slightly different angles. Burrill provides the more etymologically grounded entry, parsing the Latin roots (acceptum, a thing received; latio, a putting down) and citing the Institutes and Digest directly (Inst. 3.30.1; Dig. 46.4), along with Bracton. This gives the term a cleaner doctrinal lineage. Bouvier's entry is briefer and cross-referential, pointing the reader toward ACCEPTILATION, STIPULATIO, and STIPULATIO AQUILIANA — a structure that reflects Bouvier's general practice of treating Roman law terms as a cluster rather than in isolation.
Neither dictionary addresses the term's reception (or non-reception) in American courts with any specificity, and neither distinguishes the civilian and common law traditions with analytical care. Researchers should treat both entries as orientation to the Roman sources rather than as guides to American or modern application.
The Bouvier entry reproduced here appears to contain a fragment from a separate entry on acceptance of bills — this is an indexing artifact and should be disregarded for purposes of understanding acceptilatio.
Jurisdictional Note
In civilian and mixed jurisdictions (Louisiana, Quebec, Scotland, South Africa), the concept retains potential doctrinal relevance within the law of obligations. In common law jurisdictions, it has no operative force but remains relevant to historical and comparative research, particularly in contract and release doctrine.