Definition
Dominicide is the act of killing one's lord or master. In its historical legal context, the term described the homicide of a feudal superior or, more broadly, the murder of a master by a servant or slave. The offense carried exceptional gravity within hierarchical social and legal structures, where the relationship between lord and tenant, or master and servant, was legally protected and the violation of that bond treated as a form of aggravated betrayal.
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Common Language
Modern common usage (Wiktionary): The killing of one's master.
Historical common usage (Webster's 1913): The act of killing a master; one who kills his master.
The common and legal definitions are nearly identical in surface meaning, but the legal context carries significant weight that ordinary usage obscures. Legal sources situate dominicide within feudal tenure relationships and the doctrine of petty treason, where the offense was not merely a homicide but a breach of personal allegiance — an act structurally analogous to treason against the sovereign. The common definition captures the act but not its legal consequence or political-legal significance.
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Common Confusion
Dominicide is sometimes loosely grouped with parricide, mariticide, or other -cide compounds describing killings within domestic or hierarchical relationships. The critical distinction is the nature of the relationship: dominicide specifically concerns the killing of a feudal lord or master, not a family member. It is most closely related historically to petty treason, which under English law explicitly covered the killing of a master by a servant. A researcher conflating dominicide with petty treason should note that petty treason was the operative legal charge and carried its own statutory framework; dominicide names the act, not the crime charged.
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Why It Matters in Research
Dominicide is a term of historical legal usage with no surviving counterpart in modern criminal law. Researchers encountering it in primary sources should situate it within two overlapping frameworks: feudal tenure law and the law of petty treason.
Under the English Statute of Treasons (25 Edw. III, st. 5, c. 2), petty treason included the killing of a master by a servant and was prosecuted as a more serious offense than ordinary homicide. Dominicide in legal sources typically signals proximity to this body of law. Researchers should be alert to the fact that historical dictionaries use "lord or master" interchangeably, but the legal consequences could differ depending on whether the relationship was feudal tenure (lord and tenant) or a domestic service arrangement. The Rapalje & Lawrence entry hints at this through its appended note on the lord as heir substitute — a doctrine of feudal land law where the overlord resumed possession upon failure of blood, coloring the killing of a lord as doubly disruptive to the legal order.
Petty treason was abolished in England by the Offences Against the Person Act 1828, after which dominicide lost its distinct legal significance and any killing of a master was treated as ordinary murder. Sources predating 1828 may treat dominicide as a term of art with procedural and evidentiary implications distinct from homicide; sources after 1828 use it, if at all, only as a descriptive or antiquarian label.
The term appears rarely in American sources. Colonial and early American law did not consistently adopt the petty treason framework in the same form, and the term dominicide has minimal independent presence in American case law or legislation. Researchers using American historical legal sources should not assume that dominicide carried the same aggravated status it held under English law.
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Historical Dictionary Support
All three source dictionaries agree on the core definition: dominicide is the act of killing one's lord or master. Black's Law Dictionary (both editions) states the definition without elaboration. Rapalje & Lawrence adds the adjacent entry on dominicum and the feudal maxim regarding the lord's position as heir substitute — useful context, though the juxtaposition appears to be a matter of alphabetical proximity rather than an assertion that dominicide and dominicum are doctrinally linked. Researchers should treat the Rapalje & Lawrence entry with care and not overread the connection.
Webster's 1913 is notable for defining dominicide both as an act and as a person ("one who kills his master"), following the structural pattern of terms like homicide and parricide. The legal dictionaries define only the act. This divergence is minor but worth noting if the term appears in a context where its grammatical role is ambiguous.
None of the historical dictionaries address petty treason directly in connection with this entry, which is a significant gap. The full legal significance of dominicide cannot be understood from these entries alone; researchers must consult treatises on English criminal law and the statutory history of petty treason for complete context.
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Jurisdictional Note
Dominicide as a legal category is essentially a term of English law. Its relevance in American jurisdictions is limited to the colonial period and early republic, and even then the doctrine of petty treason was unevenly received. Modern researchers working in any jurisdiction will find no operative legal meaning for this term; its use in contemporary sources is purely historical or descriptive.
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