Definition
Entireties refers to the mode of ownership by which a husband and wife together hold property as a single legal unit, rather than as separate co-owners with divisible shares. Because the common law historically treated a married couple as one legal person, a conveyance to both spouses vested the whole estate in that unified person — not a fractional interest in each. Neither spouse holds a separable share; both hold the entirety.
The term appears most often in the phrase tenancy by the entireties (or tenancy by the entirety), which describes the resulting form of concurrent ownership. It is distinguished from joint tenancy and tenancy in common by the unity-of-person rationale: where joint tenants hold equal but severable shares, tenants by the entireties hold an indivisible whole.
Common Language
Modern common usage (Wiktionary): Simply the plural of "entirety" — the state of being whole or complete.
Historical common usage (Webster's 1913): "Entirety" meant the whole of something, as opposed to a part; completeness or wholeness.
The legal term carries this ordinary sense into a technical structure. "Entireties" in property law does not merely mean "the whole thing belongs to them" in a colloquial sense — it means that the law refuses to recognize any fractional division between the two holders at all, with specific consequences for creditors, severance, and survivorship that ordinary usage of the word does not begin to suggest.
Common Confusion
Entireties vs. joint tenancy: Both feature a right of survivorship, and historical sources sometimes treat them interchangeably. The critical difference is severability. A joint tenant may unilaterally sever the joint tenancy and convert it to a tenancy in common; a tenant by the entireties cannot, because there is no individual share to sever. The estate can be dissolved only by mutual action of both spouses, divorce, or death. Researchers should not assume that a historical source's use of "joint tenants" for a married couple accurately reflects the legal form — many older instruments and digests use the term loosely.
Entireties vs. community property: Both involve spousal co-ownership, but they arise from different legal traditions and carry different rules for creditor access, management, and dissolution. Tenancy by the entireties is a common law concept; community property is a civil law concept operative in a distinct set of states. The two are not interchangeable, and historical sources drawing on English common law will not address community property regimes.
Core Elements
For a tenancy by the entireties to arise at common law, the four unities required for joint tenancy — time, title, interest, and possession — must all be present, with a fifth unity added:
Unity of person: The two grantees must be legally married to each other at the time the estate is created. This is the element that transforms what would otherwise be a joint tenancy into a tenancy by the entireties.
Indivisibility: Because the couple is treated as one person, neither spouse can convey, encumber, or partition their "share" — there is no share to act upon individually.
Survivorship: On the death of one spouse, the survivor holds the entire estate. Unlike a joint tenancy, this survivorship right is not defeatable by unilateral act.
Why It Matters in Research
The term "entireties" is a marker for a specific historical moment in property doctrine. Its existence depends on the common law fiction of marital unity — the doctrine that husband and wife are one legal person. That fiction has been substantially dismantled by married women's property acts beginning in the mid-nineteenth century, and different jurisdictions responded to those reforms differently. Some abolished tenancy by the entireties entirely; others preserved it; others modified it so that each spouse has a distinct (if still non-severable) legal interest. Researchers reading pre-reform sources will encounter the classical form; post-reform sources may use the same terminology to describe a modified estate. The label does not guarantee the same legal content across time or jurisdiction.
Creditor rights are the area of sharpest variation and the most significant practical trap. In jurisdictions that preserve the classical form, a creditor of only one spouse generally cannot reach entireties property, because that spouse holds no separate interest to levy upon. In jurisdictions that have modified the estate, this protection may be partial or conditional. A research path that begins in the historical dictionaries and ends in a modern jurisdiction without tracking the reform history risks serious error.
The corpus connection to concurrent ownership doctrine is direct: entireties, joint tenancy, and tenancy in common form a triad that every property law source addresses, but the internal logic of each can only be understood against the others.
Historical Dictionary Support
Rapalje & Lawrence's entry on entireties is embedded within the discussion of entail and estates tail — a placement that reflects how nineteenth-century American practice digests organized property concepts by conveyancing context rather than by doctrinal category. The operative language is precise: where land is given to a husband and wife and their heirs, "they are not joint tenants, because they are in law considered as one person, but they take by entireties." This formulation captures the classical common law rule cleanly.
What the entry does not address, and what researchers must supply from other sources, is the effect of married women's property legislation on this doctrine. By the time Rapalje & Lawrence was compiled, those reforms were well underway in many American states, but historical legal dictionaries of that generation characteristically stated the common law rule without cataloguing its statutory erosion. Researchers should treat the Rapalje & Lawrence entry as a reliable baseline for the pre-reform common law but should not read it as a description of the law in any particular jurisdiction at any particular time after the mid-nineteenth century.
Jurisdictional Note
Tenancy by the entireties is not universal. Some states have abolished it; others never recognized it. Among states that preserve it, rules on creditor access, personal property eligibility, and the effect of divorce vary significantly. A jurisdictional survey is essential before drawing conclusions about whether entireties property is reachable by creditors or transferable by one spouse in any given state.
Encyclopedia Cross-Reference
Concurrent Ownership — Tenancy by the Entirety (The Law Mind Property Law Encyclopedia)