Definition
A preposition used throughout legal instruments, pleadings, and statutes to signal opposition, adversity, or physical or legal contact. Its precise meaning depends heavily on context, and courts have long recognized that the word carries no single fixed legal sense.
In common legal usage, "against" functions in several overlapping ways:
1. Adversarial: Denoting that one party stands in opposition to another — as in "judgment against the defendant" or "verdict against the plaintiff." Here the word signals whose interest is harmed or who bears the burden of a ruling.
2. Contrary to: Indicating conflict with a rule, standard, or authority — as in "against the weight of the evidence" or "against public policy." The act or result is measured against an external norm and found to contradict it.
3. Physical contact or proximity: Used in property, tort, and criminal law to describe something touching, pressing upon, or applied to something else — as in a structure built "against" a boundary wall, or force applied "against" a person's body.
4. Without consent / in violation of: Particularly in criminal pleading, "against" introduces the element of non-consent or offense — as in the phrase "against her will" in assault and rape indictments.
5. Procedural target: Identifying the subject of a legal action — as in "action against the estate" or "claim against the surety" — without necessarily implying hostility, but simply designating the party from whom relief is sought.
Common Language
Modern common usage (Wiktionary): In ordinary speech, "against" signals physical contact, opposition, contrast, competition, or exchange. It is a general-purpose preposition with a wide semantic range — one can be "against a wall," "against the rules," or "against the odds."
Historical common usage (Webster's 1913): Defined as abreast of or opposite to something; in contact with from an opposing direction; in opposition to sentiment or action; counter to. Webster emphasized physical direction and confrontational sense.
Editorial note: The gap between common and legal usage is not in meaning but in precision. Ordinary speech tolerates ambiguity; legal instruments cannot. Courts have repeatedly held that the meaning of "against" must be resolved by the surrounding text and the purpose of the provision in which it appears. A party "against" whom a judgment runs is not merely in opposition — they bear the legal obligation the judgment imposes.
Common Confusion
"Against" in criminal indictments has a technical function that looks formulaic but carries real consequence. The phrase "against the form of the statute" (Latin: contra formam statuti) was required in common-law indictments to signal that the conduct charged was prohibited by statute rather than at common law. Omitting it from a statutory indictment was grounds for challenge. Modern pleading rules have largely eliminated this rigid requirement, but older cases and historical indictments use the phrase technically. Researchers should not read it as mere rhetorical flourish.
Similarly, "to testify against" a party does not mean simply appearing on the opposing side of litigation. Courts have held that it means testifying with interests adverse to that party — a narrower and more functional definition that affects privilege and witness-disqualification analysis.
Why It Matters in Research
Researchers encounter "against" as a constant background term — in case captions, statutes, constitutional provisions, and forms — and almost never need to pause over it. The occasions when they do need precision are specific and predictable:
Criminal pleading history: Any research into historical indictments, particularly from the eighteenth or nineteenth century, will encounter "against the peace and dignity of the state" and "against the form of the statute" as distinct and required recitals. Confusing them, or treating them as interchangeable surplusage, will distort interpretation of the pleading's legal effect. The first asserts the public interest; the second triggers statutory as opposed to common-law criminality.
Constitutional provisions: Several constitutional clauses turn on "against" with technical meaning — "witness against himself" in the Fifth Amendment, "against" the states in Fourteenth Amendment incorporation doctrine, "against" a state in Article III jurisdiction. In each context, the scope of "against" has been defined by judicial interpretation, not ordinary usage.
Corpus research across time periods: In sources predating the twentieth century, "against" in property documents may denote physical adjacency rather than legal opposition. Misreading a deed description that uses "against" in the locative sense as if it were adversarial will produce erroneous results.
Jurisdictional traps in multi-party litigation: "Judgment against" in older equity practice had different enforcement implications than "judgment against" in actions at law. The same word attached to the same procedural outcome could mean different things depending on the court's jurisdiction.
Historical Dictionary Support
Bouvier and Anderson agree that "against" means opposition, adversity, and contrariness, and both acknowledge that its particular meaning depends on context and purpose — an unusually candid concession for legal dictionaries of their era. Bouvier adds the important gloss that "testify against" refers to adverse interest, not merely adverse alignment in the suit, and cites supporting authority.
Black's 2nd Edition is the most useful of the shelf sources for researchers, because it captures the criminal-pleading dimension — "against the form of the statute" as a technical requirement — and grounds the definition in actual cases. It also adds "without the consent of" as a recognized legal sense, which neither Bouvier nor Anderson foregrounds, and which is essential for battery, rape, and trespass analysis.
What the historical dictionaries collectively miss is any treatment of "against" in constitutional interpretation, which had not yet become the contested domain it is today. Researchers working on incorporation, self-incrimination, or sovereign immunity will need to go beyond the dictionary shelf entirely.
Encyclopedia Cross-Reference
The Law Mind Constitutional Law Encyclopedia: Incorporation of the Bill of Rights Against the States
The Law Mind Trusts, Estates & Probate Encyclopedia: Powers of Appointment and the Rule Against Perpetuities