Definition
A nude contract (also called a naked contract or nudum pactum) is an agreement made without consideration — that is, without any legally recognized exchange of value or benefit flowing between the parties. Because consideration is a foundational requirement for an enforceable contract at common law, a nude contract creates no legal obligation and supports no cause of action. The classical maxim states the rule directly: ex nudo pacto non oritur actio — "from a naked agreement, no action arises."
In practical terms, a nude contract is a promise or agreement that fails at the threshold of enforceability. One party may have agreed to do something, but if nothing was given, promised, or foregone in return, the agreement is legally inert. It may carry moral weight or represent a genuine intention, but courts applying common law doctrine will not enforce it.
Common Language
Modern common usage (Wiktionary): "Nude" in ordinary modern English means unclothed or bare, with no standard secondary meaning in general usage that connects to contracts or legal obligations.
Historical common usage (Webster's 1913): "Nude" — bare, naked, or unclothed; also used figuratively to mean stripped of covering or ornament.
The gap here is complete. In common usage, "nude" refers exclusively to the absence of clothing or covering. In legal usage, "nude" borrows the Latin sense of nakedness as a metaphor for absence — specifically, the absence of consideration. A researcher encountering "nude contract" for the first time in a historical source should not read the term through its ordinary English meaning. The nudity is juristic, not literal: the contract is bare of the one thing that gives it legal life.
Common Confusion
Nude contract is sometimes loosely conflated with void contract or unenforceable contract, but the categories are not identical. A void contract fails for any of several reasons — illegality, incapacity, fraud, impossibility. A nude contract fails specifically and only for want of consideration. Separately, nudum pactum is occasionally confused with gratuitous promise. A gratuitous promise is the broader category; nudum pactum is the common law doctrinal label for why such a promise is unenforceable. The Latin phrase and the English gloss are functionally interchangeable in historical sources, but a researcher should be alert to both forms when surveying case law or treatise material.
Why It Matters in Research
The term is predominantly historical. Modern American and English legal writing rarely uses "nude contract" as a working term, having displaced it almost entirely with the vocabulary of "consideration" and "lack of consideration." Researchers encountering the phrase in 18th- or 19th-century case reports, equity proceedings, or treatises should treat it as the period's standard shorthand for what modern doctrine calls an agreement unsupported by consideration.
The maxim ex nudo pacto non oritur actio functions as the doctrinal anchor. Historical sources frequently cite the maxim without fully articulating the consideration doctrine behind it — the maxim was understood to carry the full weight of the rule. When tracing the development of consideration doctrine in the Law Mind corpus, nude contract and nudum pactum are the index terms most likely to appear in pre-20th-century material; "lack of consideration" and "failure of consideration" dominate later sources. Note that "failure of consideration" is a distinct concept (consideration existed but was not performed), so those terms should not be used interchangeably in research.
Equity historically showed some willingness to relieve parties from the harshness of the nudum pactum rule in certain contexts — particularly where reliance had occurred — foreshadowing the promissory estoppel doctrine that would later develop at law. Researchers examining equitable enforcement of gratuitous promises should use nude contract and nudum pactum as entry points into that earlier equitable literature.
Historical Dictionary Support
Black's Law Dictionary and Rapalje & Lawrence are in complete agreement, offering nearly identical definitions: a contract made without consideration upon which no action will lie. Both cite 2 Blackstone's Commentaries 445 as primary authority. Rapalje & Lawrence adds a citation to Addison on Contracts (6th edition, pages 3–8), which provides additional treatise depth on the doctrine.
Both definitions are characteristically spare — they identify the rule without explaining its evolution or the exceptions that equity had already begun to recognize by the time these dictionaries were compiled. Neither source addresses the developing concept of promissory estoppel or the ways courts were beginning to find consideration in contexts that earlier doctrine might have dismissed as nude. Researchers should not treat these definitions as exhaustive statements of the law even at the time of publication; they are accurate as far as they go but reflect the black-letter common law rule rather than its equitable qualifications.
The shared citation to Blackstone is significant. Blackstone's treatment of the maxim in Book II is the standard historical reference point and will be encountered repeatedly in 18th- and 19th-century authorities on this point.