Definition
An enterferer is a person who exchanges blows in a combat — specifically, a participant in a physical fight or judicial combat who actively strikes or engages an opponent. The term appears in Law French legal records and denotes the mutual combatants in such an encounter, emphasizing the reciprocal nature of the exchange rather than designating only the aggressor or only the defender.
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Why It Matters in Research
This term is a relic of Law French and is effectively dead outside of historical legal records. Researchers will encounter it almost exclusively in Year Book materials from the medieval and early modern English common law period — the single source reference (Yearb. M. 4 Edw.) situates it firmly in that narrow textual world.
The key research trap is mistaking the term for a variant of "interferer" or connecting it to modern concepts of interference (tortious or otherwise). The two words share no legal relationship. An enterferer is not a third party meddling in another's affairs; the term describes direct, mutual combat participants.
Researchers working in Year Books, plea rolls, or treatises on trial by battle and medieval criminal procedure may encounter the term in passing without annotation. Because Burrill is one of the only English-language legal dictionaries to record it, researchers relying solely on later dictionaries — Black's, Bouvier's — will find no entry and may wrongly conclude the term is a scribal error or variant spelling.
The Law French construction is also worth flagging: many Year Book terms appear in hybrid Anglo-Norman forms that were never fully anglicized, and enterferer is one such term. Cross-referencing with glossaries of Law French (such as those appended to editions of Rastell or Termes de la Ley) may provide additional context when the surrounding Year Book passage is ambiguous.
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Historical Dictionary Support
Burrill's Law Dictionary provides the only recorded definition among the standard shelf sources: "L. Fr. To exchange blows in a combat," citing Yearb. M. 4 Edw. Burrill's treatment is minimal — a single-line entry — but it correctly identifies the Law French origin and the mutual combat context. No further elaboration appears in Burrill, and the term is absent from Bouvier's Law Dictionary, Black's Law Dictionary, and Tomlin's Law Dictionary, indicating it was already archaic or hyper-specialized by the time those later dictionaries were compiled.
The Year Book citation (Michaelmas term, 4 Edward — likely Edward I, II, or III, though the regnal number is not specified in the source) places the term in the thirteenth or fourteenth century. This is consistent with the period when trial by battle and formal judicial combat still had procedural significance in English law, and when Law French was the working language of pleading and court record. The term's disappearance from later dictionaries tracks the decline of trial by battle itself, which was formally abolished in England in 1819 — long after the term had ceased to carry any practical legal weight.
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Jurisdictional Note
Enterferer is an English common law term with no recognized counterpart in American, Scottish, or continental legal traditions. It has no operative meaning in any modern jurisdiction.
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