Definition
A practice, custom, or mode of dealing that prevails generally throughout a country, industry, or trade — as distinguished from a local or regional custom confined to a particular locality or community. General usage carries weight in legal interpretation because courts presume that parties to a contract or transaction are aware of, and intend to be bound by, the broad customary practices of their trade or profession. Where a general usage is sufficiently uniform and well-established, it may supply missing contract terms, inform the meaning of ambiguous language, or establish a standard of reasonable conduct.
General usage operates in contrast to local usage, which applies only within a defined geographic area, and to course of dealing or course of performance, which are specific to the history between particular contracting parties.
Common Language
Modern common usage (Wiktionary): "General usage" in ordinary English means the common or widespread use of something — a word, a tool, a practice — without legal significance attached to that prevalence.
Historical common usage (Webster's 1913): Usage is defined as "the act or manner of using; mode of using or treating; treatment," with "general usage" implying customary or habitual practice broadly shared.
The gap between common and legal meaning is meaningful. In ordinary English, "general usage" describes how something is commonly used or what is standard practice in a loose, descriptive sense. In law, it is a term of art: a general usage must be sufficiently established, uniform, and known within a trade or profession to be legally operative — capable of supplying contract terms, shaping interpretation, or defining the standard of care. Not every common practice rises to a legally cognizable general usage.
Common Confusion
General usage is frequently conflated with three related but distinct concepts:
Local usage refers to a custom prevailing in a particular place rather than across an industry or country. Courts will apply local usage only to contracts made or to be performed in that locality, and local usage may be displaced by contrary general usage if the parties are not both from that locality.
Trade usage (or usage of trade) is the modern commercial law term — codified in Article 1 of the Uniform Commercial Code — for a practice or method of dealing having such regularity of observance in a place, vocation, or trade as to justify an expectation that it will be observed in a given transaction. Trade usage is the functional successor to what older authorities called general usage within a specific industry.
Course of dealing and course of performance are narrower: they describe the history of conduct between the same parties in prior transactions (course of dealing) or under the same contract (course of performance), not the broader customs of an industry or trade.
Why It Matters in Research
Researchers working in contract interpretation, commercial law, and evidence will encounter "general usage" as an older term that maps imperfectly onto modern doctrine. Several navigational points matter:
First, the term has largely been absorbed by "usage of trade" in modern commercial law. When researching disputes under the UCC or its analogs, expect the analysis to proceed under trade usage doctrine rather than general usage, though the underlying conceptual question — whether a practice is sufficiently widespread and known to bind parties — is the same.
Second, in older case law and treatises, "general usage" was often used to establish implied contract terms or to interpret ambiguous language, much as trade usage functions today. Researchers tracing the history of implied terms or the parol evidence rule will find general usage playing a central role in pre-UCC commercial cases.
Third, courts historically distinguished general usage from local usage to resolve conflicts where a party from outside a particular locality argued ignorance of local custom. Understanding this distinction is essential when reading older evidence and contract cases that turn on which rule applies.
Fourth, Bouvier's entry simply redirects to USAGE, signaling that general usage was not always treated as a standalone doctrine but as a species within the broader category. Researchers should pursue the parent entry and its subtypes when working through historical sources.
Historical Dictionary Support
Black's definition is economical but precise: a general usage is one that "prevails generally throughout the country, or is followed generally by a given profession or trade, and is not local in its nature or observance." This formulation captures the two dimensions of generality — geographic breadth (country-wide) and professional breadth (across a trade or profession) — and explicitly contrasts general usage with local observance. Black's entry implicitly acknowledges that "general" modifies both scope and the class of persons bound.
Bouvier's cross-reference to USAGE without independent treatment reflects the older common law's tendency to treat usage as a unified doctrine, with locality and generality as factors within a single analysis rather than as separate legal categories. This approach differs from the more taxonomic modern treatment, where general usage, local usage, trade usage, course of dealing, and course of performance are distinct concepts with different operative rules.
Neither source engages with the evidentiary requirements for establishing general usage — the need to show that a practice is notorious, certain, and uniform — which are addressed in treatise literature and case law rather than in these dictionary entries.
Jurisdictional Note
Modern UCC jurisdictions (all U.S. states with Article 1 in force) apply trade usage doctrine rather than general usage by name, but the conceptual framework is directly descended from the older general usage doctrine. In non-UCC contexts — professional liability, real property custom, maritime law — general usage analysis continues under traditional common law principles, and courts in different jurisdictions vary in how they weigh general industry practice against local custom.
Encyclopedia Cross-Reference
Interpretation — Course of Dealing, Course of Performance, and Usage of Trade (The Law Mind Contracts & Commercial Law Encyclopedia)