Definition
A Latin adjective from medieval English legal usage meaning "qualified," "conditional in nature," or "having the character of a modus." A modalis disposition, grant, or obligation is one that is not absolute but is instead modified, enlarged, or restricted by some qualifying condition, purpose, or manner of performance attached to it. The term derives from modus — the qualifying clause or limitation imposed upon a grant, bequest, or obligation — and functions as its adjectival form: where modus names the qualification itself, modalis describes the thing so qualified.
In practice, the term appears in contrast to pure or absolute legal acts. A grant that was neither conditional (conditionalis) nor qualified (modalis) operated without restriction; one that was modalis carried embedded limitations on how, when, or for what purpose it was to be exercised or enjoyed.
Why It Matters in Research
Modalis is a term of medieval Latin legal writing and will appear almost exclusively in pre-modern English legal sources — primarily in Bracton and in treatises or abridgments that draw on the Bractonian tradition. Researchers working with Latin-text manuscripts or early printed editions of Bracton's De Legibus et Consuetudinibus Angliae will encounter it most frequently. It is not a term of modern practice and will not appear in contemporary statutory or case law.
The key navigational point is the relationship between modalis and its parent noun modus. Understanding modalis requires first understanding modus in its English law sense: a qualifying clause attached to a grant or devise that shapes the manner or purpose of enjoyment, distinct from a condition precedent or condition subsequent in the strict sense. Researchers who look up modalis without first grounding themselves in modus risk misreading the qualifying framework being described.
When reading early sources that use non conditionalis nec modalis as a phrase of art, be aware that this pairing was doing specific doctrinal work — distinguishing grants that operated freely and absolutely from those encumbered by either formal conditions or softer modal qualifications. The distinction mattered to questions of seisin, fee, and the rights of grantees and their heirs.
Because this term belongs to a stratum of Latin legal vocabulary absorbed into English law from civilian and canonist sources, researchers tracing the influence of Roman and canon law on medieval English property doctrine will find it a useful marker. Its presence in a source is itself evidence of that civilian influence.
Historical Dictionary Support
Burrill is the primary dictionary source for this term in the Law Mind corpus, and his entry is spare but precise. He correctly roots modalis in modus, glosses it as "qualified; enlarged or restricted," and provides the Bracton reference (fol. 23) that grounds the term in its documentary home. The phrase Burrill quotes — non conditionalis nec modalis — is a genuine Bractonian formula distinguishing absolute acts from those subject to qualification.
Burrill does not develop the doctrinal content of the distinction, and no other major English-language legal dictionary (Bouvier, Black, Tomlin) gives the term significant independent treatment. This reflects the term's status: it is a descriptor for a concept (modus) that dictionaries treat at length, while modalis itself receives only passing attention. A researcher who finds this entry exhausted should treat it as a signpost to the modus entry and to the Bracton passages directly.
Historical dictionaries are largely silent on any evolution of this term because it did not evolve — it remained a technical Latinate adjective confined to the learned legal literature of the medieval and early modern periods and never migrated into vernacular legal English as an operative term of art.