Definition
In legal usage, "accustomed" means established by long or consistent practice — referring to a way, use, or right that has been habitually exercised and thereby defined in its scope. The term most commonly appears in deeds and conveyances, where it functions as a limiting or descriptive qualifier: an "accustomed way" is not simply any way that might be used, but the particular route or manner of use that has been established by prior practice. Courts have treated the word as fixing boundaries by reference to historical usage rather than leaving them open to future interpretation.
The term carries the same general weight as "usual" or "customary" in most legal contexts. At least one early American court held that "accustomed to navigate" and "usually navigating" were not legally distinct — the terms were treated as interchangeable in pleading, with no variance found between them.
Common Language
Modern common usage (Wiktionary): Familiar with something through repeated experience; adapted to existing conditions (of a person). Familiar through use; usual; customary (of a thing, condition, or activity).
Historical common usage (Webster's 1913): Familiar through use; usual; customary. Also, frequented by customers (obsolete).
The gap between common and legal usage is narrow but consequential. In everyday speech, "accustomed" is a descriptive adjective — it tells you something about a person's habits or a thing's familiar character. In legal instruments, particularly deeds, it functions as a term of limitation: it does not merely describe, it defines and restricts. An "accustomed way" in a deed is not shorthand for "a way that seems familiar" — it is a reference to a specific, historically established route, and courts will not permit the grantee to substitute a different way simply because it is equally convenient or commonly used.
Common Confusion
"Accustomed" is sometimes read loosely as equivalent to "any reasonable" or "any convenient" use. Courts have rejected this reading. The word anchors the right to the last established practice, not to what might reasonably be expected going forward. Researchers should also be careful not to conflate "accustomed" with "prescriptive" — an accustomed way in a deed derives its definition from prior use as a matter of deed construction, not from the separate doctrine of prescriptive easement, which carries its own elements and timeframe requirements.
Why It Matters in Research
The principal research value of this term is in deed construction and property law. When "accustomed" appears in a historical deed granting a right of way, water privilege, or similar appurtenance, courts have consistently held that the scope of the right is fixed by the last pattern of actual use — not by the grantee's intended or preferred use going forward. This makes the term a potential trap for researchers reading historical conveyances: a grant of an "accustomed way" may appear to convey a flexible easement but is in practice a narrow, fact-specific right tied to physical and historical circumstances at the time of conveyance.
The interchangeability of "accustomed" and "usually" in pleading contexts (as noted in early American authority) matters for variance analysis in older cases. Researchers examining 19th-century pleadings should not assume a fatal variance where one document uses "accustomed" and another uses "usual" or "customary" — courts generally treated these as synonymous in that context.
Because the term feeds directly into questions of custom and habit as legal concepts, corpus researchers should trace it alongside those headwords. The Anderson entry explicitly cross-references CUSTOM and HABIT, signaling that "accustomed" was understood as the adjectival form of an established legal category, not merely common English.
Historical Dictionary Support
Bouvier's and Anderson's are in full agreement on the core principle: where a deed uses "accustomed way," the right of way is limited to the last accustomed way. Both sources rely on the same underlying authority (a New Jersey decision and what appears to be a treatise compendium reference) and reach the same conclusion.
Bouvier's adds the pleading equivalence point — that "accustomed to navigate" and "usually navigating" were not treated as variant — which Anderson's does not address. This is a minor divergence in coverage, not in doctrine.
Neither source develops the term at length. Both treat it as a lookup reference pointing toward CUSTOM and HABIT for fuller treatment. Researchers should not expect either dictionary entry to exhaust the doctrine; the entries are navigational rather than analytical.
What the historical dictionaries do not address: the term's potential application outside deed law — for example, in regulatory or administrative contexts where "accustomed use" might define the scope of a license or franchise. That dimension is absent from both sources.
Encyclopedia Cross-Reference
See Law Mind Encyclopedia: EASEMENTS — Scope and Limitation by Prior Use; CUSTOM AND USAGE IN DEED CONSTRUCTION.