Definition
A Latin phrase meaning "for avoiding a loss." De jactura evitanda describes the posture of a defendant who acts or argues not to gain a windfall but to prevent suffering a loss. It functions as a characterization of motive and equitable position: the defendant is not reaching for profit (de lucro captando) but merely seeking to hold what is already theirs.
The phrase appears most often in equity and contract contexts where courts assess the relative equities of the parties. A defendant invoking this principle argues that their position deserves solicitude because they stand to lose something they already possess, rather than to acquire something new.
Common Confusion
De jactura evitanda is paired by definition against de lucro captando ("for capturing a gain"), the phrase applied to a plaintiff seeking affirmative recovery. The two phrases operate as a matched set. Researchers who encounter one in historical sources should expect the other nearby. Conflating the two reverses the equitable posture entirely: one describes a party protecting existing possession, the other a party pursuing new acquisition. Courts and treatise writers historically used the contrast to adjudicate which party's equities were stronger when both could not prevail.
Why It Matters in Research
This is a phrase of equitable characterization, not a cause of action or a procedural device. Researchers will not find it as a case heading or a statutory term. It appears in argumentative and analytical text — in judicial opinions weighing equities, in briefs framing a defendant's position, and in treatise passages discussing the relative standing of parties.
The phrase belongs to a layer of Latin legal shorthand common in nineteenth-century American and English jurisprudence that has largely dropped out of modern legal writing. Researchers working in pre-twentieth-century case law, particularly in equity, should recognize it as a signal about the court's framing of the dispute, not a term of art with procedural consequences.
The Kentucky citation appearing in all three dictionary sources — Jones v. Sevier, 1 Littell (Ky.) 61 — is the primary anchor case in the American corpus. Researchers tracing the phrase's judicial use should begin there. The phrase is rare enough that its appearance in any source signals a court or writer engaging with classical equitable reasoning, often in discussions of unjust enrichment, restitution, or the assignment of loss between parties.
Cross-referencing de lucro captando is essential: the two phrases virtually never appear without the other in proximity, and understanding one requires understanding the contrast with the other.
Historical Dictionary Support
Black's (1st Ed.), Black's (2nd Ed.), and Burrill's are in full agreement on the definition and the plaintiff/defendant pairing. All three sources rely on the same Kentucky authority. Burrill's entry is the most concise, offering nothing beyond the translation and the citation. Black's 2nd Edition is marginally more complete, citing Jones v. Sevier with a fuller reference including the American Decisions reporter.
None of the historical dictionaries elaborate on the doctrinal contexts in which the phrase operates, the equitable principles it invokes, or its relationship to unjust enrichment reasoning. The entries are definitional snapshots rather than analytical guides. A researcher relying solely on these sources will know what the phrase means but not how courts actually deployed it.
Jurisdictional Note
The phrase appears in American sources primarily through Kentucky equity decisions. Its origins are in the broader common law equity tradition shared with English courts. No jurisdictional variation in the phrase's meaning is documented; the variation lies only in how frequently different jurisdictions' courts employed Latin equitable shorthand of this kind.