Definition
Prejudice carries two distinct legal meanings that operate largely independently of each other. Researchers should not assume that a historical source using the word means the same thing as a modern one.
1. Bias or preconceived opinion — A mental state in which a person has formed a judgment about a matter, party, or side before proper examination. In the adjudicative context, this sense governs challenges to jurors, judges, and other decision-makers. A juror is disqualified not merely because they hold an opinion but because that opinion is sufficiently fixed that it cannot be displaced by evidence. This form of prejudice need not involve hostility or ill will; it is satisfied by a settled predisposition, however arrived at.
2. Injury, detriment, or disadvantage — A harm suffered by a party as a legal or practical consequence of some act, omission, ruling, or procedural event. In this sense, prejudice is a threshold or limiting concept: courts ask whether a party has been prejudiced by an error, a delay, an amendment, a late disclosure, or a defective pleading. A finding of no prejudice often defeats an otherwise valid procedural objection. Dismissal "with prejudice" means the party is barred from relitigating the claim; dismissal "without prejudice" leaves the door open.
These two senses are etymologically unified — both derive from the idea of judging before full examination — but in practice they operate in different doctrinal contexts and should be treated as distinct terms.
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Common Language
Modern common usage (Wiktionary): The Wiktionary entry for the standard form of the word describes it as an unreasonable bias or preconceived opinion, particularly one that is adverse to a person or group.
Historical common usage (Webster's 1913): "An opinion or judgment formed without due examination; prejudgment; a leaning toward one side of a question from other considerations than those belonging to it; an unreasonable predilection for, or objection against, anything."
The common meaning tracks legal sense 1 closely but ignores legal sense 2 entirely. In everyday usage, "prejudice" almost never means injury or detriment. This creates a significant gap: a researcher encountering "prejudice" in a judicial opinion, pleading, or contract must determine which sense is operative. The phrase "without prejudice" — one of the most consequential terms in procedural and settlement practice — is invisible to a purely common-English reading of the word.
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Common Confusion
WITHOUT PREJUDICE vs. WITHOUT MERIT: These are not synonyms. A denial "without prejudice" says nothing about the merits of a motion; it simply preserves the right to bring the motion again. A dismissal "without prejudice" does not mean the court found the claim meritless — only that the dismissal does not bar refiling.
PREJUDICE (bias) vs. PREJUDICE (harm): In jury-selection and recusal contexts, prejudice means a disqualifying state of mind. In procedural contexts — harmless-error analysis, laches, leave to amend, sanctions — it means demonstrable disadvantage. Conflating the two can produce serious misreading of case law. An appellate court asking whether the defendant was "prejudiced" by evidentiary error is asking about harm to the trial outcome, not about the judge's impartiality.
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Recognized Forms
/SUBTYPES
WITH PREJUDICE: A dismissal or judgment that operates as a final adjudication on the merits, barring any subsequent action on the same claim between the same parties.
WITHOUT PREJUDICE: A dismissal, ruling, or communication that does not extinguish rights or constitute an admission. In settlement negotiations, an offer made "without prejudice" is generally inadmissible as evidence of liability.
ACTUAL PREJUDICE: A standard requiring proof that a party suffered concrete, specific harm — used in contexts including post-conviction relief, speedy-trial analysis, and late-notice defenses in insurance.
PRESUMED PREJUDICE: A doctrine under which prejudice is inferred from circumstances without requiring particularized proof — applied, for example, where juror exposure to pervasive pretrial publicity is so severe that bias is assumed.
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Why It Matters in Research
The dual meaning is the central research trap. Historical sources — including all five source dictionaries here — tend to address both senses within a single entry without cleanly separating them. Black's first edition defines the term primarily as "bias" but then adds a brief note that prejudice also means "injury, loss, or damnification." A researcher working quickly could miss the second meaning entirely.
The "without prejudice" doctrine has a rich and evolving body of law that is almost entirely separate from the bias/disqualification doctrine. These bodies of law cite different precedents, invoke different policy rationales, and appear in different procedural contexts. A search for "prejudice" across a legal corpus will return results from both lines, and a researcher who does not immediately sort them risks badly misreading sources.
In insurance law, prejudice has taken on a specific technical role: many jurisdictions require an insurer to show it was prejudiced by late notice before it can deny coverage on that basis. This is a term of art with its own doctrinal framework (see insurance_81).
In equity, laches requires not just delay but delay that caused prejudice to the opposing party — meaning the harm sense, not the bias sense (see civpro_135).
Harmless-error doctrine turns entirely on whether error caused prejudice in the harm sense. The phrase "harmless error" is, essentially, "error without prejudice."
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Historical Dictionary Support
The source dictionaries are broadly consistent on the bias sense but vary in how much weight they give the injury sense. Burrill provides the most precise structural account, defining the term as "detriment; damage; loss" and noting the Latin root's literal meaning of judging beforehand — the only source here that explicitly bridges both senses through etymology. Anderson notes that the popular meaning involves ill will or grudge, which neither the legal bias sense nor the legal harm sense requires, and that a disqualifying prejudice in a juror is a "fixed" opinion — a useful precision that Black's first edition softens with vaguer language.
Rapalje & Lawrence is the most practically oriented of the five, focusing on the "without prejudice" doctrine in evidentiary and procedural contexts. Their observation that an offer made without prejudice cannot be given in evidence "at all" except for collateral purposes reflects the classical common-law rule, which modern practice has both codified and modified. Researchers relying on Rapalje for the scope of the without-prejudice privilege should confirm the applicable jurisdiction's current rule, as statutory and rule-based treatments have varied the doctrine considerably.
None of the five sources adequately develops the prejudice-as-threshold-requirement doctrine central to modern procedural law — the sense in which a court withholds relief unless the complaining party can show actual injury from the challenged act. This modern usage is largely a product of mid-to-late twentieth century procedural formalization and will not be found in the historical dictionaries.
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Jurisdictional Note
The prejudice requirement in insurance late-notice defenses varies significantly: some states impose it as a precondition to disclaimer regardless of policy language, while others treat it as a rebuttable presumption or require no showing at all. In federal courts, harmless-error prejudice analysis differs across civil and criminal contexts, with criminal defendants generally entitled to a more protective standard.
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Encyclopedia Cross-Reference
civpro_135: Laches — Equitable Time Bar and Prejudice Requirement (The Law Mind Civil Procedure & Evidence Encyclopedia)
insurance_81: Estoppel and Waiver in Coverage Disputes — Late Disclaimer, Conduct-Based Waiver, and Prejudice (The Law Mind Insurance Law Encyclopedia)
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