Definition
Powers, in legal usage, refers to legally recognized authorities, capacities, or entitlements to act — whether vested in a person, office, governmental body, or legal instrument. The term operates across multiple distinct legal contexts, each with its own doctrinal framework. It is one of the most structurally important words in law, functioning as an organizing concept in property, agency, constitutional law, and corporate practice.
1. Power of Appointment. A right conferred on a person (the "donee") by deed, will, or other instrument to designate who will receive property — typically property belonging to, or subject to disposition by, another (the "donor"). The donee does not own the property but has authority to direct where it goes. Powers of appointment may be general (exercisable in favor of anyone, including the donee or the donee's estate) or special/limited (exercisable only in favor of a defined class of persons).
2. Constitutional Powers. Authorities granted to branches of government or reserved from them by a constitution. In U.S. constitutional law, federal powers are enumerated or implied; powers not so granted are reserved to the states or the people. Congressional powers, executive powers, and judicial powers each occupy distinct constitutional space and have generated extensive doctrine.
3. Powers of Attorney / Agency Powers. The authority granted by one person (the principal) to another (the agent or attorney-in-fact) to act on the principal's behalf. These may be general (broad authority across transactions) or special/limited (authority for a specific act or category of acts). A durable power of attorney survives the principal's incapacity; an ordinary power of attorney does not.
4. Corporate Powers. The legal capacities of a corporation to act — including express powers granted by charter or statute and implied powers reasonably necessary to carry out authorized purposes. Actions beyond those powers were historically challenged as ultra vires.
5. Powers as Property Interests. In property law, a "power" may also refer to one of Hohfeld's fundamental legal relations: a capacity to alter legal relations (one's own or another's) by a voluntary act. This usage appears in analytical jurisprudence and advanced property scholarship but seldom in judicial opinions.
---
Common Language
Modern common usage (Wiktionary): Third-person singular simple present indicative of "power" (e.g., "she powers the device").
Historical common usage (Webster's 1913): Ability or capacity to act; physical strength; authority or influence; legal authority conferred by law or agreement; a state or sovereign entity.
The gap is meaningful. In ordinary English, "powers" typically denotes capabilities or physical force. In law, "powers" denotes a structured legal relation — a defined authority to affect legal rights or property. A person may have the physical ability to do something without having the legal power to do it, and vice versa. The Hohfeldian distinction between a "power" (legal capacity to change relations) and a "right" (a claim enforceable against another) is critical to precision in legal analysis and is routinely collapsed in general usage.
---
Recognized Forms
/SUBTYPES
General Power of Appointment — exercisable in favor of any person, including the donee.
Special (Limited) Power of Appointment — exercisable only within a defined class.
Power Coupled with an Interest — an agency power where the agent holds an interest in the subject matter; irrevocable at common law.
Durable Power of Attorney — survives the principal's incapacity by statutory authorization.
Enumerated Powers — express constitutional grants to a governmental body.
Implied Powers — powers reasonably necessary and proper to carry out enumerated powers.
Reserved Powers — powers not granted to the federal government, retained by states or the people under the Tenth Amendment.
Ultra Vires Powers — corporate acts beyond the scope of authorized power (a limiting concept, not a type of power, but inseparable from corporate powers analysis).
---
Why It Matters in Research
The word "powers" is a false friend in historical legal research: it appears in nearly every area of law, but its doctrinal content shifts entirely depending on context. A researcher who finds "powers" in a historical deed is dealing with property law; the same word in a constitutional treatise operates in an entirely different universe of doctrine.
In property sources, pay close attention to whether a power of appointment is being described as a "power" or conflated with "ownership" — historical sources sometimes treated general powers of appointment as equivalent to ownership for estate purposes, while modern tax law has formalized that equivalence. The distinction between general and special powers drives significant consequences in estate planning and taxation, and the terminology was not always consistent in 19th-century sources.
In constitutional research, "powers" was a contested word from the founding era forward. Early debates over implied powers — whether the Necessary and Proper Clause expanded or merely clarified congressional authority — are embedded in sources using the same surface vocabulary with sharply divergent meanings. Researchers using historical constitutional materials should track not just the word but the argumentative tradition in which it appears.
In agency and corporate contexts, the phrase "power coupled with an interest" is a technical term of art that was frequently misapplied in older cases. Research into historical agency doctrine should treat the phrase with skepticism until the specific factual basis for the coupling is established.
The Hohfeldian analytical framework (powers as distinct from rights, privileges, and immunities) was introduced in academic legal writing in the early 20th century. Pre-Hohfeld sources — including Rapalje & Lawrence — use "power" without this precision. Researchers should not retrofit Hohfeldian categories onto older authorities without care.
---
Historical Dictionary Support
Rapalje & Lawrence (1883) does not contain a standalone entry for "powers" as a general term. The relevant source material reflects the dictionary's organizational approach: powers appear embedded within entries for specific instruments and transactions — parol grants, parol leases, gifts, dedications, part performance — where authority to act or convey is addressed as an element of the particular doctrine rather than as a freestanding concept.
This structural absence is itself informative. Late 19th-century legal dictionaries typically addressed powers of appointment under their own heading and treated constitutional or governmental powers as self-evident or beyond the scope of a practitioner's reference work. The omission suggests that "powers" as a general legal category was not yet treated as requiring unified doctrinal exposition — each species of power was addressed within its own legal context.
What historical dictionaries of the period do capture well is the property law dimension: powers of appointment, powers of sale, and powers incident to specific estates received detailed treatment in contemporaneous works such as Bouvier's Law Dictionary. What they tend to undertreat is the analytical relationship between "power" and adjacent concepts such as right, capacity, and authority — a gap that Hohfeld's work later exposed.
---
Jurisdictional Note
Powers of appointment are governed by a mix of common law doctrine, state property statutes (many states have adopted versions of the Uniform Powers of Appointment Act), and federal tax law. Constitutional powers analysis is federal and state-specific simultaneously: federal enumerated and implied powers operate under U.S. constitutional doctrine, while state constitutional powers vary substantially by state constitution. Corporate powers are governed by the incorporating state's law.
---
Encyclopedia Cross-Reference
Congressional Power — Enumerated Powers and the Necessary and Proper Clause (The Law Mind Constitutional Law Encyclopedia)
---