Definition
Latin: "Out of abundant caution." A phrase used to describe an action taken as a precautionary measure beyond what is strictly required — not because the law demands it, but because a careful practitioner or court wishes to eliminate any possible doubt, ambiguity, or future dispute. The act done ex abundanti cautela is legally unnecessary at the time it is performed, but is undertaken to foreclose any argument that it was omitted.
The phrase appears most often in pleading, conveyancing, and procedural contexts, where practitioners include surplus language, extra notices, additional recitals, or redundant formalities to guard against unforeseen objections. A clause inserted ex abundanti cautela does not imply that the drafter believed the clause was legally required; its inclusion is precautionary, not concessive.
Common Language
No common English counterpart exists. The phrase is pure legal Latin with no civilian meaning. The COMMON LANGUAGE section is omitted.
Common Confusion
Ex abundanti cautela is sometimes loosely equated with surplusage — language that is redundant or unnecessary. The distinction matters: surplusage is typically neutral or potentially harmful (courts may construe surplus language against the drafter), while language inserted ex abundanti cautela is a deliberate, strategic choice to add protection. A clause is surplusage by accident or oversight; it is ex abundanti cautela by design. Researchers encountering either characterization in older opinions should not treat them as interchangeable.
Why It Matters in Research
The phrase appears across a wide range of historical legal contexts and its significance shifts depending on where it surfaces:
In pleading: Courts in the 18th and 19th centuries used ex abundanti cautela to explain why a party included allegations that were not technically necessary to state a claim. Finding this phrase in a historical pleading opinion signals that the court is addressing whether surplus averments can be ignored, treated as admitted, or used against the pleader.
In conveyancing and drafting: Deeds and instruments frequently contain recitals or covenants inserted ex abundanti cautela. When a grantor's counsel included an extra covenant "out of abundant caution," later courts sometimes struggled over whether that inclusion implied an admission of some underlying legal uncertainty. Researchers examining title disputes or covenant construction cases should watch for this phrase as a signal that the drafter's intent — rather than the legal necessity of the clause — is at issue.
In procedural practice: Lord Ellenborough's usage (cited in both Black's and Burrill's) arose in the context of a practice that had developed cautiously over time — not as a formal rule, but as a habitual precaution. This illustrates an important research trap: when courts describe a practice as arising ex abundanti cautela, they are often signaling that the practice lacks firm doctrinal grounding. Such a practice may be vulnerable to challenge or may later harden into formal requirement.
Corpus navigation note: The phrase appears in variant forms across historical materials — sometimes as abundanti cautela (without the ex), sometimes hyphenated or italicized inconsistently. Both Black's editions and Burrill's cite the same source authorities (8 East and 4 Maule & Selwyn), suggesting the dictionaries drew from a common tradition rather than independently surveying practice. Researchers should not treat the repetition of the same citation across multiple dictionaries as evidence of a broad body of authority.
Historical Dictionary Support
All three source dictionaries offer identical or near-identical definitions — "out of abundant caution" — and all three cite the same two authorities: a report at 8 East and Lord Ellenborough's usage at 4 Maule & Selwyn 544. The second edition of Black's introduces a minor typographical corruption ("cautcla" for "cautela"), suggesting mechanical reproduction rather than independent editorial review.
Burrill's citation to 8 East 319 and Black's to 8 East 326 reflect different page references to what appears to be the same volume, possibly citing different passages or reflecting different editions of the East reports. Researchers consulting these reports directly should account for this discrepancy.
What the historical dictionaries omit is any functional guidance on how courts actually treated language inserted ex abundanti cautela — whether such insertions were disregarded, construed against the inserting party, or given weight as evidence of intent. The dictionaries define the phrase without explaining its interpretive consequences, which is precisely where research disputes arise.
Jurisdictional Note
The phrase originated in English common law practice and entered American legal usage through that tradition. It appears across common law jurisdictions without significant jurisdictional variation in meaning, though its frequency of use in modern American drafting and pleading has declined sharply. Civil law jurisdictions do not use the term in the same way.