Definition
Licitum is a Latin term from Roman and civil law meaning "that which is lawful" or "permitted by law." It describes acts, objects, or purposes that are legally sanctioned — neither prohibited by statute nor contrary to public policy. The term functions as an adjective characterizing conduct or arrangements as falling within the bounds of legal permission, as opposed to what is illicitum (unlawful or forbidden).
In classical legal usage, licitum carries a broader meaning than merely "not criminal." An act may be licitum in the sense that no law forbids it, even if no law expressly authorizes it. The concept thus marks the floor of legal tolerance: lawful acts are those the legal order permits, whether by affirmative grant or simple non-prohibition.
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Common Language
The term has no meaningful common English usage. It is Latin legal vocabulary that passed into the terminology of civil law, canon law, and early common law treatise writing, and does not appear in ordinary English speech. The COMMON LANGUAGE section is omitted accordingly.
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Why It Matters in Research
Researchers encounter licitum primarily in three contexts: civil law sources, early English common law treatises, and canon law materials. Its significance is mostly taxonomic — it anchors a binary distinction (licitum/illicitum) that shapes how older sources organize discussions of contractual validity, marriage, and agency.
In contract and agency materials, the maxim associated with licitum — licita bene miscentur, formula nisi juris obstet ("lawful acts are well mingled unless some form of law forbids") — has practical weight. Burrill cites Bacon's Maxims for the proposition that when multiple lawful authorities each contribute to an act, the law will treat the combined result as a single valid act, provided no rule of form stands in the way. Researchers working on early merger of authority, agency by estoppel, or the consolidation of concurrent grants will find this maxim cited as a foundational principle.
The trap for modern researchers is treating licitum as a synonym for "legal" in the contemporary sense of "in compliance with positive law." In civil and canon law usage, licitum could also be assessed against natural law or divine law, layers that are often invisible in modern analysis but very much present in pre-19th century sources. A transaction described as licitum in a 17th-century treatise may be lawful under positive law but the author may be assuming, without saying so, that it is also consistent with higher-order moral norms. Conversely, some canonists distinguished between licitum and validum: an act could be valid (legally effective) yet illicitum (morally or canonically improper). That distinction does not map cleanly onto modern common law categories.
In corpus research, licitum appears most often in maxim collections, civil law commentaries, and treatises on natural law and the law of nations. It is less common in purely English common law case reporters, where the vernacular equivalents ("lawful," "permitted," "not forbidden") replaced the Latin. When you encounter it in common law sources, it is almost always in a treatise passage drawing on civilian authority.
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Historical Dictionary Support
Burrill's Law Dictionary treats licitum straightforwardly as "lawful; permitted by law," tracing the term to the Latin licere. Burrill's primary contribution is preserving the associated maxim — licita bene miscentur, formula nisi juris obstet — with its citation to Bacon's Maxims, Rule 24. The maxim captures something important: the law's disposition to validate lawful acts even when they are assembled from multiple sources of authority, unless procedural form intervenes. Burrill's entry is sparse but accurate.
What Burrill does not address is the layered civil law and canon law usage in which licitum is distinguished from validum, or the natural law backdrop against which the term was typically applied. Researchers working in those traditions should consult Justinian's Digest and Institutes, Grotius's De Jure Belli ac Pacis, and Pufendorf's De Jure Naturae et Gentium for fuller treatment. None of these appear in Burrill's entry, reflecting its common law orientation.
No other source dictionaries were submitted for this entry.
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Jurisdictional Note
Licitum as a technical term is most operative in jurisdictions with civil law traditions — Louisiana, Quebec, and jurisdictions drawing on Roman law heritage. In common law jurisdictions it appears as learned vocabulary in treatises and academic writing rather than as operative terminology in statutes or cases.
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