Definition
A Latin phrase meaning "between husband and wife." Used in legal contexts to describe matters, actions, proceedings, or legal relationships that exist, arise, or operate between spouses. The phrase appears most often as a descriptive modifier in discussions of interspousal rights, privileges, disabilities, and transactions — particularly in older common law authorities addressing the legal unity of husband and wife.
Why It Matters in Research
Researchers encountering this phrase in historical sources should treat it as a signal that the surrounding text likely touches on common law doctrines of coverture, interspousal immunity, or spousal privilege — areas that have undergone profound statutory and constitutional transformation since the nineteenth century. The phrase is essentially an artifact of an era when the law treated husband and wife as a single legal person, meaning that many rights, obligations, and causes of action described as existing or not existing *inter virum et uxorem* have been substantially altered or abolished.
When scanning historical digests, treatises, or reported cases, the phrase may appear in headnotes or indexing to group a diverse range of issues: property transfers between spouses, the enforceability of contracts made between them, testimonial competency and privilege, and the availability of tort claims by one spouse against the other. A modern researcher must be careful not to carry forward the legal conclusions attached to this phrase, because the underlying doctrine — not just the Latin — has changed. Statutes such as Married Women's Property Acts (enacted across U.S. jurisdictions beginning in the mid-nineteenth century) dismantled many of the disabilities that gave the phrase its operative legal force.
The phrase does not appear with significant frequency in modern American legal writing; when it does appear, it is typically in historical analysis or in courts engaging with older precedent. Researchers should cross-check any authority using this phrase against the statutory reform history of the relevant jurisdiction.
Historical Dictionary Support
Both editions of Black's Law Dictionary define the phrase identically and minimally: "between husband and wife." Neither edition elaborates on the substantive doctrines to which the phrase attaches, treating it purely as a translational entry. This brevity is typical of how Latin maxims and descriptive phrases were handled in early editions of Black's — the reader was assumed to know the broader legal context.
What the historical dictionaries leave implicit is the weight this phrase carried in common law practice. At the time these entries were written, saying that a rule operated *inter virum et uxorem* invoked an entire architecture of legal consequences flowing from the doctrine of marital unity. The dictionaries' silence on that architecture reflects an expectation that practitioners and scholars would supply it themselves. Modern researchers lack that assumed context and should consult treatises on domestic relations or legal history to reconstruct it.
Jurisdictional Note
The substantive doctrines historically associated with this phrase varied by jurisdiction, and the pace of statutory reform differed significantly across U.S. states and between common law and civil law jurisdictions. In civil law systems, the premise of complete marital legal unity underlying much of the phrase's common law usage did not apply in the same way. Researchers working across jurisdictions should not assume uniform doctrine simply because the Latin phrase appears in sources from different legal traditions.