Definition
Excussio is a Latin term from Roman and civil law with two distinct meanings, one procedural and one archaic:
1. (Civil law) The diligent prosecution of a legal remedy against a principal debtor to exhaustion before a creditor may proceed against the debtor's sureties. Excussio captures the requirement that a creditor must first exhaust available remedies against the primary obligor — pursuing the debtor vigorously and fully — before turning to those who merely guaranteed the debt. This is the doctrine of exhaustion as applied in surety relationships under Roman and civil law systems.
2. (Old English law) Rescue or rescous — the retaking of goods or a person by force. This meaning is archaic and found only in the earliest common law sources, notably Spelman's Glossary. It has no practical application in modern legal research.
The civil law meaning is the operative definition for virtually all research purposes.
Common Confusion
Excussio is frequently translated as or conflated with "discussion" in civil law texts. In the civil law tradition, discussion (discussio, or the beneficium discussionis) is the substantive right or benefit a surety holds — the right to demand that the creditor proceed against the principal debtor first. Excussio describes the act or process of exercising that right: the actual diligent pursuit of the remedy. The two terms are closely linked and often used interchangeably in older texts, but excussio emphasizes the procedural conduct of exhaustion, while discussion names the surety's underlying legal benefit. A researcher encountering either term in a civil law or Louisiana source should examine both entries together.
Why It Matters in Research
Researchers working in civil law jurisdictions — particularly Louisiana, Quebec, or sources drawing on Roman law, the French Civil Code, or Spanish colonial law — will encounter excussio as a term of art embedded in surety and guaranty doctrine. The concept maps directly onto what common law systems call the surety's right to compel the creditor to exhaust remedies against the principal before pursuing the guarantor, though common law courts typically address this through contract terms or statute rather than a named civil law benefit.
The dual meaning of excussio is a significant trap. The old English usage meaning "rescue" or "rescous" — the forcible retaking of distrained goods — appears in Spelman and other early glossaries and has nothing to do with surety law. A researcher encountering the term in a medieval English source must read context carefully to determine which meaning applies.
In civil law sources, the term often appears in Latin without translation, particularly in pre-20th-century Louisiana jurisprudence and treatises on civilian obligations. When it does appear translated, it surfaces as "discussion," which creates a secondary search problem: researchers must run both terms to achieve complete corpus coverage.
The civil law meaning of excussio also connects to related procedural benefits in surety doctrine — particularly the beneficium divisionis (the right to have a debt divided among co-sureties) and the beneficium cedendarum actionum (the right to have the creditor's actions against the debtor assigned to the surety upon payment). Understanding excussio in isolation, without these companion doctrines, produces an incomplete picture of civilian surety law.
Historical Dictionary Support
Black's (1st and 2nd editions) and Burrill's are in full agreement on both meanings. All three sources present the civil law definition first and note the old English meaning parenthetically, attributing the latter to Spelman's Glossary. Burrill's adds the most useful orienting information by noting the Latin root — excutere, meaning to shake out or to search — which illuminates why the term implies thoroughness of pursuit: the creditor must, in effect, shake out whatever can be extracted from the principal before proceeding further.
None of the historical dictionary sources fully develop the relationship between excussio and the beneficium discussionis, treating them as equivalent rather than related-but-distinct concepts. Researchers relying solely on these dictionary entries risk collapsing the procedural act into the substantive right. Primary civilian sources and treatises on Roman law obligations are necessary for fuller treatment.
Jurisdictional Note
The civil law meaning of excussio remains relevant in Louisiana, where civilian surety doctrine persisted through the Louisiana Civil Code. Other American common law jurisdictions do not use the term, though functionally analogous doctrines (requiring exhaustion of remedies against the principal) appear in some state guaranty statutes and case law under different terminology.
Encyclopedia Cross-Reference
See Law Mind Encyclopedia: Suretyship; Discussion (Civil Law); Beneficium Discussionis.