Definition
Latin. Unwilling; against the will; without consent. Used in legal contexts to describe actions taken over the objection of a party, or conditions arising without a party's agreement or cooperation. Invitus does not merely mean passive non-consent — it carries the sense of active unwillingness or opposition.
The term appears most often in three Latin constructions:
1. In invitum — Against an unwilling or resisting party. Applied to proceedings, judgments, or decrees entered against a party who actively opposes the demand made upon them. Also used to describe obligations imposed without voluntary agreement, such as taxation.
2. Ab invito — From an unwilling person. Used to describe transfers, takings, or acts that originate from a person who does not consent and may actively resist.
3. Invito domino — The owner being unwilling. A phrase historically significant in property and criminal law, particularly in describing the "taking" element of larceny: a taking against the will of the owner (invito domino) is a required feature distinguishing theft from lawful acquisition.
---
Common Language
Modern common usage (Wiktionary): Not a standard English word. Appears in English only as a legal or classical Latin borrowing.
Historical common usage (Webster's 1913): Not listed as an English entry. Recognized only in Latin.
Because invitus has no life in ordinary English, the COMMON LANGUAGE section is omitted on substantive grounds — there is no common-usage gap to bridge.
---
Common Confusion
Invitus is sometimes loosely equated with terms like non-consensual or involuntary, but the Latin carries a sharper edge. Involuntary in modern legal usage can describe actions taken without conscious deliberation (an involuntary reflex, an involuntary manslaughter). Invitus implies a party who is present, aware, and opposed — not merely someone who lacks volition. The distinction matters in historical sources: in invitum proceedings assumed a resisting adversary, not merely an absent or incapacitated one.
---
Why It Matters in Research
Researchers encounter invitus and its compounds most often in three contexts, each carrying its own historical weight.
First, in larceny doctrine. Invito domino was the classical formula for the taking element of theft — the asportation had to be against the owner's will. Pre-twentieth-century treatises and cases use this phrase routinely. Modern criminal codes have largely replaced it with plain-language definitions, so researchers moving between historical sources and modern statutes must recognize that invito domino and "without consent of the owner" are functional equivalents, but the historical phrase carries nuances about possession, custody, and the moment of taking that plain-language codes compress or lose.
Second, in property and quasi-contract law. Obligations arising in invitum — without voluntary assumption — were a category distinct from contractual obligations. Unjust enrichment claims, liens, and certain equitable remedies were said to arise in invitum, meaning they bound parties regardless of consent. Researchers tracing the development of restitution and unjust enrichment doctrine will encounter this framing frequently in equity treatises and early American case law.
Third, in tax and regulatory law. The observation that taxes are levied in invitum — against unwilling subjects — appears in older constitutional and jurisprudential writing as a way of distinguishing compelled exactions from voluntary transactions. This framing surfaces in debates about the distinction between taxes and penalties, and in arguments about the coercive character of state power.
The key research trap: invitus and its compounds appear in running Latin text embedded in otherwise English-language opinions and treatises through the nineteenth century and into the early twentieth. Researchers using keyword search tools on digitized sources may miss these phrases if searches are not run in Latin. The compounds (in invitum, ab invito, invito domino) should each be searched independently, as they do not always appear together.
---
Historical Dictionary Support
Anderson and Burrill agree on the core meaning — unwilling, against the will, without consent, under compulsion — and both flag the primary compound in invitum as the most legally operative form. Anderson provides the richer enumeration of compounds and their specific applications, connecting invito domino expressly to larceny doctrine. Burrill is more economical but adds the coercion dimension explicitly, noting that invitus implies action "by or under coercion or compulsion," which is a useful clarification for distinguishing passive non-consent from active opposition.
Neither dictionary situates invitus within the broader Latin legal vocabulary adequately for modern researchers. Missing from both is any discussion of how the in invitum framework relates to the development of quasi-contractual obligations, or how courts used the phrase to mark the boundary between consensual and non-consensual legal relations. For that genealogy, researchers must go to equity treatises directly.
Both dictionaries reflect a nineteenth-century legal culture comfortable with Latin as a working vocabulary. By mid-twentieth century, this comfort had diminished sharply, and the phrases appear far less frequently in American legal writing. This compression of Latin usage is itself a research data point: the disappearance of invito domino from criminal law writing tracks the modernization of theft statutes.
---
Jurisdictional Note
Invitus and its compounds are civil law and common law Latin used across English-speaking jurisdictions. No meaningful jurisdictional variation applies to the meaning of the term itself. Variation arises instead in how jurisdiction-specific doctrines — larceny, unjust enrichment, tax law — have codified or abandoned the underlying concepts.
---