Definition
A Latin adjective meaning abundant, overflowing, or superfluous — more than strictly necessary. In legal usage, the term appears almost exclusively as part of the maxim abundans cautela non nocet: "abundant caution does no harm" (also rendered as "extreme caution does no harm"). The maxim holds that inserting surplus language or taking precautionary steps beyond what is strictly required does not invalidate an instrument, pleading, or legal act. Superfluous words added out of caution neither void an instrument nor alter its legal effect. The term does not function as a standalone legal concept but as a component of the maxim it generates.
Why It Matters in Research
Researchers encountering abundans in a historical legal source should treat it as a signal that the surrounding text addresses either (1) the construction of instruments containing surplus or repetitive language, or (2) procedural steps taken out of caution in doubtful circumstances. The maxim abundans cautela non nocet was frequently invoked in treatises and opinions to justify redundant recitals in deeds, contracts, and pleadings — particularly where a drafter inserted belt-and-suspenders language to eliminate ambiguity.
The research trap here is treating abundans as a substantive doctrine rather than a maxim-embedded term. It has no independent doctrinal life; its entire legal significance lies in the maxim. Searching historical sources for abundans alone will produce sparse results. Searching for cautela, abundans cautela, or superflua non nocent will surface the relevant material. Anderson's Dictionary of Law acknowledges this directly by cross-referencing to CAUTELA rather than providing a standalone entry.
The maxim is closely connected in the historical corpus to the construction of deeds and pleadings, appearing in Coke and Fleta in contexts where courts declined to strike instruments for verbal excess. Researchers working in equity or conveyancing history will find it relevant to arguments about whether surplusage defeats intent.
Historical Dictionary Support
The three source dictionaries handle abundans consistently but at different depths. Burrill provides the most complete treatment, defining the term grammatically (from abundare), noting its primary legal application in the phrase abundans cautela, and citing Fleta lib. 1, c. 28, § 1 and Coke's Reports alongside the Codex. Burrill also cross-references Superflua non nocent, the companion maxim confirming that superfluous matter does not harm an instrument — useful because the two maxims travel together in historical sources and reinforce the same principle from slightly different angles.
Black's integrates the term within the maxim itself rather than as a standalone entry, framing it as a principle of instrument construction where superfluous words have been inserted to express intention more clearly, with a reference to 11 Coke 66. Anderson provides only a redirect to CAUTELA, treating abundans as a lookup term rather than a substantive entry — a practical editorial judgment given that the concept lives in the maxim.
No meaningful divergence exists among the three sources. All agree the term signals surplus or precautionary language and that the governing maxim treats such excess as legally harmless. None of the historical dictionaries addresses whether the maxim has limits — that is, whether truly contradictory surplus language might override rather than yield to the primary intent — a question that arises in instrument construction disputes and is not answered here.