Definition
In Roman and civil law, intercedere means to become bound for the debt or obligation of another. The term describes the act by which a third party interposes themselves into an existing debt relationship, assuming personal liability for another's obligation. The intercedens — the person interceding — steps between the creditor and the original debtor, binding themselves to answer for what the debtor owes.
The concept encompasses several related acts: suretyship, where a person guarantees another's debt; interposition, where a third party assumes a debt entirely; and intervention in an obligation already formed between two other parties. In each case, the defining feature is that the obligation was not originally the interceding party's own.
Common Language
Modern common usage (Wiktionary): To intercede means to intervene on behalf of another, especially to plead or mediate in their favor.
Historical common usage (Webster's 1913): "To pass between; to intervene. To mediate; to make intercession; to beg or plead on behalf of another."
The common meaning captures advocacy and pleading — speaking for someone. The legal meaning of intercedere goes further and harder: it is not merely speaking on another's behalf but binding oneself legally to their obligation. A person who intercedes in the civil law sense does not merely advocate — they become personally liable.
Common Confusion
Intercedere is closely related to but distinct from several other civil law concepts. Fidejussio is a specific, formal type of suretyship under Roman law; intercedere is the broader category of which fidejussio is one form. Intercessio, the noun form derived from intercedere, is sometimes used interchangeably but in strict Roman law usage refers specifically to the act of intervention by a magistrate or by operation of a legal rule — as well as to the prohibited intercession by women under the Senatusconsultum Velleianum. Researchers should not assume that every use of intercessio in a Roman or civil law source refers to suretyship; context governs which meaning applies.
Why It Matters in Research
Intercedere surfaces primarily in research touching Roman law, the civil law tradition, and jurisdictions whose private law derives from Roman sources — Louisiana, Quebec, and the Scottish legal tradition prominent in older Anglo-American treatises. Researchers working in common law sources before the 19th century may encounter intercedere in discussions of suretyship, guaranty, and the obligations of married women, because the Senatusconsultum Velleianum — the Roman senate decree restricting women from interceding for others' debts — traveled with the term into civilian-influenced legal writing.
The key navigational trap: intercedere appears in historical sources discussing women's legal capacity. The Velleianum's prohibition on female intercessio was a live doctrinal issue in civil law jurisdictions well into the early modern period and appears in Scottish, French, and Dutch legal sources that influenced American civil law. A researcher who encounters the term in this context and reads it only as generic suretyship may miss the gendered legal incapacity argument being made.
In American legal research, the term is almost exclusively historical and civilian. It does not appear as operative doctrine in common law states. Bouvier and Black both carry it as a civil law term of art, signaling that it entered American legal dictionaries as a bridge concept for practitioners and scholars trained in or dealing with civil law materials, not as a working term in common law pleading or equity.
Historical Dictionary Support
All three source dictionaries are in full agreement: intercedere means to become bound for another's debt, and all three locate it squarely in the civil law. The entries are notably terse — Black's and Bouvier's give a single sentence; Rapalje & Lawrence's entry appears incomplete as preserved. This brevity is consistent across historical civilian glossaries and reflects that the term was treated as a foundational concept requiring identification rather than extended explanation — its doctrinal elaboration was left to the treatise literature on suretyship and obligations.
What the historical dictionaries do not capture is the breadth of intercedere's functional scope in Roman law: the term covered not only voluntary suretyship but any transaction by which a person made another's debt their own, including novation, delegation, and certain pledge arrangements. The dictionary definitions, accurate as far as they go, collapse a richer civilian taxonomy into a single phrase. Researchers needing that fuller picture should look to civilian institutional writers — Pothier's Traité des obligations and Justinian's Institutes, Book III — rather than relying on the dictionary entries alone.
Jurisdictional Note
Intercedere as a working legal concept retains doctrinal relevance in jurisdictions with civilian private law traditions, particularly Louisiana and Quebec, where suretyship law traces to Roman and French sources. In common law jurisdictions it appears only in historical and comparative legal scholarship.