Definition
Things proper and useful for sustaining human life, including food, clothing, medicine, and shelter. The term is explicitly relative: what qualifies as a necessary depends on the social condition, station, and circumstances of the particular person involved, not on a fixed universal standard.
The term carries distinct legal weight in two main contexts:
1. Contracts of Infants. An infant (minor) generally lacks contractual capacity and may disaffirm contracts. An exception exists for necessaries: a minor may be bound — or, more precisely, held liable in quasi-contract — for goods and services that qualify as necessaries suited to the minor's actual station in life. The category is not limited to bare subsistence items. It extends to things reasonably appropriate to the minor's rank and condition, which may include education, medical care, and clothing beyond the minimum.
2. Spousal and Dependent Support. A spouse or guardian who provides necessaries to a dependent may recover their cost from the party legally obligated to support that dependent. Historically, a husband was liable for necessaries furnished to his wife by third parties on the husband's credit. Modern doctrine in most jurisdictions has equalized or restructured this obligation.
Common Language
Modern common usage (Wiktionary): Necessary or indispensable items.
Historical common usage (Webster's 1913): Things that are indispensable to some purpose; essentials; requisites.
The common meaning tracks the legal meaning closely enough that no sharp gap exists — but the ordinary speaker would assume a fixed, objective standard (survival-level essentials). The legal doctrine is more nuanced: necessaries expand or contract with the individual's circumstances and social position. A minor from a wealthy household may be entitled to claim a broader range of goods as necessaries than a minor of modest means. The legal term is relational, not categorical.
Common Confusion
NECESSARIES vs. NECESSARY AND PROPER (Constitutional). The near-identical phrasing creates a search hazard in undifferentiated corpora. The "Necessary and Proper Clause" of the U.S. Constitution is a wholly separate doctrine governing congressional power and carries no doctrinal connection to the private law concept of necessaries in contract or family law. Researchers filtering historical sources should use additional context terms to disambiguate.
NECESSARIES vs. LUXURY GOODS. Courts routinely contrast necessaries with "luxuries" to determine enforceability of infant contracts. The line is fact-specific and station-dependent: an item classified as a luxury for one minor may be a necessary for another. This is not a binary distinction but a contextual judgment.
Why It Matters in Research
The relativity of the term is its central research trap. Historical cases and treatises define necessaries differently depending on the era's social norms, the minor's class status, and whether the court was applying English common law, equity principles, or early American adaptation. A definition drawn from an English case involving a young gentleman of rank will not transfer cleanly to American cases involving ordinary minors, even in the same period.
The spousal necessaries doctrine underwent significant transformation in the twentieth century. Early sources — including all dictionaries represented here — reflect a common law framework in which the husband was the sole obligor. Researchers working with post-1970s materials must account for legislative equalization of spousal support duties, which altered or abolished the traditional necessaries doctrine in many states. Historical dictionary entries are not reliable guides to modern spousal necessaries law.
Quasi-contract liability is the operative enforcement mechanism for infant necessaries in most modern treatments. Early sources sometimes describe the infant as "bound" by the contract, which is imprecise: the better analysis is that the infant is liable not on the contract itself but on an implied obligation to pay the reasonable value of what was received. This distinction matters when researching remedies and measure of recovery.
The Burrill entry's note that the question of what constitutes a necessary "is, in each case, to be tried by a jury" flags an important procedural dimension that disappears from later dictionary treatments. Researchers should not assume the categorization was a purely legal (judge-decided) question at common law.
Historical Dictionary Support
The five substantive sources show strong agreement on the core definition and its relative character. Black's (both editions), Bouvier's, Burrill's, and Rapalje & Lawrence all converge on the proposition that necessaries are not limited to bare subsistence but extend to things appropriate to the person's station. The Burrill entry is the most procedurally precise, noting the jury question and citing English authority directly (Meeson & Welsby, Manning & Granger, Adolphus & Ellis reports). Bouvier's is the most expansive in its enumeration, explicitly including "conveniences of refined society" within the concept — a formulation that is generous even by the relative standard.
Anderson's entry is truncated in the source material and adds little independent content, though it usefully ties the concept to wife, infant, and ward as the principal categories of dependents.
Rapalje & Lawrence offers the clearest statement of the infant-contract rule and cites Coke on Littleton (172a) as foundational authority, which reflects the English common law origin of the doctrine. The separate Rapalje entry under "Ne rector prosternet arbores" in the same source has no connection to necessaries and appears as a cataloguing artifact; researchers should disregard it.
What the historical dictionaries collectively omit: any treatment of quasi-contractual recovery as distinct from contractual liability, the equalization of spousal duties, or the possibility that the category of necessaries might be defined by statute rather than common law.
Jurisdictional Note
Several states have codified the necessaries doctrine by statute, either limiting the common law rule, extending it to both spouses equally, or abolishing third-party necessaries claims against non-contracting spouses. The traditional common law rule placing liability solely on the husband has been held unconstitutional or legislatively superseded in a number of jurisdictions. Researchers should verify whether a given state applies common law, modified common law, or a statutory framework before relying on historical sources.
Encyclopedia Cross-Reference
The Law Mind Contracts & Commercial Law Encyclopedia — contracts_30: Defenses — Lack of Capacity (Minors — Voidable Contracts and Necessaries). This is the primary and directly relevant entry for the infant-contract application of this term.
The Law Mind Constitutional Law Encyclopedia — constitutional_13: Congressional Power — Enumerated Powers and the Necessary and Proper Clause. Relevant only for disambiguation purposes; the constitutional doctrine is doctrinally unrelated.