Definition
A Latin legal term meaning assault. Assultus is the Latin form used in early English common law pleading, writs, and legal records to denote an assault — that is, an unlawful threatening or menacing act by one person toward another. The term appears in formal legal instruments, particularly in Latin pleadings and indictments from the medieval and early modern periods, before English displaced Latin as the language of court records.
Common Confusion
Assultus is not a substantive legal concept distinct from assault — it is the Latin vehicle for the same concept. Researchers encountering assultus in a historical document should treat it as equivalent to assault in its common law sense, understanding that the precise legal content of "assault" was itself evolving during the period when Latin pleading was in use. The Latin form carries no independent doctrinal weight separate from the English term it represents.
Why It Matters in Research
Researchers working in English legal records from the medieval period through the mid-seventeenth century will encounter assultus as a routine term in plea rolls, indictments, and civil writs. Its presence is a reliable marker of the era: Latin was required in English court records from the medieval period until the Pleading in English Act 1362 began pushing vernacular usage, and Latin returned formally in some contexts before being definitively abolished in court proceedings by statute in 1731. A record containing assultus almost certainly predates that abolition or falls within a formal Latin-language instrument of the intervening period.
The key navigational point is that assultus functions as a keyword for search purposes in digitized Latin legal records, plea rolls, and Year Book materials. Researchers using corpus tools should search both assultus and its variant spelling adsultus (the classical Latin form, with the prefix ads- rather than ass-) when canvassing primary sources. The two spellings reflect the difference between classical orthographic convention and the more phonetic medieval legal Latin that standardized around ass-.
Because assault in the common law sense encompassed both what modern law calls assault (the threat or attempt) and in some early usage battery (the completed act), the appearance of assultus in a historical record does not by itself resolve whether physical contact occurred. Context — particularly the presence of companion terms such as verberatio (beating) or vi et armis clauses — is essential to interpreting what the pleader actually alleged.
Historical Dictionary Support
Burrill's Law Dictionary offers a minimal but accurate entry: assultus is defined as "an assault," with a cross-reference to Spelman's Glossarium Archaeologicum. Burrill's derivation from assilire (to assail, to leap upon) aligns with the classical Latin sources, which use adsultus to describe a physical rushing or leaping toward something — an attack. Vergil and Tacitus both use adsultus in military and physical combat contexts, meaning the classical term carried a connotation of active physical movement rather than mere threat. This is worth noting because it sits in mild tension with the common law definition of assault, which (by the time English courts were theorizing it systematically) did not require physical contact. The Latin root's physical and aggressive connotation likely reflects an earlier stage of legal thinking in which the assault-battery distinction was less developed.
Burrill's source reference to Spelman is appropriate. Henry Spelman's Glossarium Archaeologicum remains a foundational reference for Latin terms in English legal records, and researchers who need deeper treatment of assultus in its documentary context should consult Spelman directly.
No significant divergence exists among historical dictionaries on this term because the corpus is thin — assultus is a Latin label, not a contested doctrinal category, and the historical dictionaries treat it accordingly as a simple Latin-to-English translation.
Jurisdictional Note
Assultus is specific to the English common law tradition and its Latin-language documentary record. Scots law, which maintained its own Latin pleading tradition, and canon law records may also use the term, and researchers working in those corpora should be alert to potentially different surrounding doctrinal contexts.
Encyclopedia Cross-Reference
See ASSAULT for full treatment of the substantive legal concept, its common law development, elements, and modern doctrine.