Definition
Jus abstinendi (Latin: "the right of abstaining") is a principle of Roman law giving an heir the right to renounce or decline an inheritance. Where accepting an inheritance would expose the heir to personal liability for debts exceeding the value of the estate — making acceptance a burden rather than a benefit — the heir could formally abstain, stepping back from the succession entirely rather than being compelled to take on an insolvent estate.
The right reflects a foundational tension in succession law: inheritance conveys both assets and liabilities, and a legal system must decide whether an heir can be forced to absorb the latter when they exceed the former.
Why It Matters in Research
This term appears almost exclusively in materials treating Roman law or its civil law descendants. Researchers encountering jus abstinendi in American legal sources should treat it as a signal that the author is drawing on civil law tradition — either in comparative analysis, in Louisiana materials, or in historical treatises surveying the Roman foundations of inheritance doctrine.
The practical concept survives in modern law under very different vocabulary. Common law systems address the same problem through the formal disclaimer or renunciation of an inheritance. Civil law systems use analogous mechanisms (répudiation in French law, for example). A researcher looking for the functional successor to jus abstinendi in modern American case law or statutes will not find that phrase — they will find "disclaimer," "renunciation," and related terms governed by state probate codes and, at the federal level, rules affecting estate and gift tax consequences of disclaimers. The Latin term is essentially retired from operative legal usage.
Do not expect this term in post-nineteenth-century American case law. Its presence in a source is itself a dating and tradition marker: it places the author in the civilian or comparative tradition, or in a period when Roman law vocabulary was still current in American legal writing.
Historical Dictionary Support
Black's Law Dictionary (2nd Ed.) defines jus abstinendi as "the right of renunciation; the right of an heir, under the Roman law, to renounce or decline the inheritance, as, for example, where his acceptance, in consequence of the necessity of paying the debts, would make it a burden to him," citing Mackeldey's Roman Law § 733.
The entry is brief and accurate as far as it goes. Black's correctly situates the doctrine in Roman law and identifies the core rationale — protection from an heir being saddled with net-negative estate liability. What the entry does not do is trace the doctrine's influence on civil law jurisdictions or explain its relationship to common law renunciation doctrine, which by the time of Black's second edition was already well-developed in American probate practice under its own terminology. No English-language historical legal dictionary examined for this entry adds substantively to Black's account.
Mackeldey's Roman Law, the treatise Black's cites, was a standard nineteenth-century authority on Roman civil law and was frequently relied upon by American courts and writers engaging with civilian materials. Its treatment of jus abstinendi would be the appropriate primary source for a researcher needing deeper doctrinal grounding in the Roman rule.
Jurisdictional Note
The doctrine as such has no operative force in any American jurisdiction. Louisiana, as a mixed civil law state, addresses renunciation of succession through its Civil Code provisions on acceptance and renunciation of successions rather than through Roman law terminology. Researchers working in Louisiana succession law should consult the Civil Code directly rather than relying on Roman law vocabulary.