Definition
Ex abundanti (also spelled ex habundanti in older sources) is a Latin phrase meaning "out of abundance," "more than sufficient," or "superfluously." In legal usage, it describes language, clauses, or acts that go beyond what is strictly necessary — added out of caution or for completeness rather than because they are required. Something done ex abundanti adds nothing to the legal force of what was already accomplished; it is redundant but not necessarily harmful.
The concept appears most often in two contexts:
1. Drafting: A clause or provision inserted ex abundanti is surplusage — it restates or reinforces what the instrument already accomplishes without adding new legal effect.
2. Pleading and procedure: An allegation or step taken ex abundanti cautela (out of abundant caution) is included to foreclose any argument, not because it is legally indispensable.
The companion phrase ex abundanti cautela — sometimes encountered separately — is the more common form in modern practice and explicitly frames the surplus act as a precautionary measure.
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Common Language
This is pure legal Latin with no meaningful counterpart in ordinary modern English. The COMMON LANGUAGE section is omitted.
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Why It Matters in Research
Researchers encounter ex abundanti most often when analyzing whether surplus language in a deed, contract, or pleading carries interpretive weight. Courts applying the rule against surplusage will sometimes treat language added ex abundanti as having no operative effect — which can cut against a party arguing that every word must be given independent meaning. Understanding that the drafter may have self-identified language as merely cautionary is important when reconstructing intent.
In historical sources, the variant spelling ex habundanti appears with some frequency, particularly in records tied to medieval English chancery and exchequer practice. Burrill cites a Memoranda in Scaccario reference from the reign of Edward I (H. 22 Edw. I), placing the phrase's formal legal use in the late thirteenth century. Researchers working with early English court records should search both spellings.
The phrase also surfaces in ecclesiastical and civil law traditions, where acts performed "out of abundance" could affect whether they were treated as legally operative or merely ceremonial. In those contexts, the distinction between a substantive act and a superfluous one carried real consequences for the validity of instruments.
One navigational trap: ex abundanti cautela — the cautionary variant — appears far more frequently in reported cases and modern legal writing than the bare form ex abundanti. A corpus search limited to the shorter form will miss a substantial portion of relevant material. Search both.
The Rapalje & Lawrence entry in the source material is clearly a misprint or scanning artifact — it does not contain a definition of this term and should not be relied upon for substantive content.
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Historical Dictionary Support
Black's Law Dictionary (both the first and second editions) and Burrill's Law Dictionary are in full agreement on the core definition: out of abundance; abundantly; superfluously; more than sufficient. All three trace the phrase to Calvin (Calvinus, Lexicon Juridicum), the standard early modern Latin legal glossary. Burrill adds the additional citation to Calv. Lex. Jur. and the Memoranda in Scaccario, giving the term firmer historical grounding than the Black's entries alone provide.
None of the historical dictionaries develop the doctrinal consequences of the concept — they treat it as definitional rather than analytical. For the interpretive stakes (surplusage doctrine, cautela applications, drafting implications), researchers must move beyond dictionary sources to treatises and case law.
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Jurisdictional Note
Ex abundanti is a civil and common law Latin term that crosses jurisdictional lines without major variation in meaning. Its practical application — particularly in surplusage analysis — depends on the interpretive doctrines of the relevant jurisdiction, which vary considerably. The phrase itself is consistent; the consequences of something being labeled superfluous are not.
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