Definition
In legal usage, "friend" appears primarily in two technical compound forms rather than as a standalone term of art:
1. Friend of the Court (amicus curiae): A person—typically but not exclusively a member of the bar—who is not a party to a proceeding but who volunteers or is invited to provide information, argument, or legal analysis to assist the court. The friend of the court is understood to be disinterested, meaning they have no personal stake in the outcome. The role is advisory, not adversarial.
2. Next Friend: A person who acts on behalf of another who lacks legal capacity to act for themselves—a minor, a person of unsound mind, or any individual not sui juris (legally competent to manage their own affairs). The next friend is not a formal party in their own right but appears in a representative capacity to protect the interests of the person they represent. The relationship does not require formal appointment in the way guardianship does.
Common Language
Modern common usage (Wiktionary): To add a person to a list of friends on a social networking site; to officially designate someone as a friend online.
Historical common usage (Webster's 1913): One who entertains sincere regard for another; one not inimical or hostile; one of the same nation, party, or kin whose friendly feelings may be assumed.
The gap is sharp. The common word carries a purely relational, affective meaning—someone well-disposed toward another. The legal compound terms strip away the emotional content entirely. A "next friend" need not be a friend in any ordinary sense; the designation is functional, not sentimental. A "friend of the court" may be an institution, a government agency, or an advocacy organization with its own interests—hardly a neutral companion.
Common Confusion
Next friend is frequently confused with guardian ad litem. Both act on behalf of persons lacking legal capacity, but they are procedurally distinct. A guardian ad litem is typically court-appointed and owes duties to the court as well as to the represented party; a next friend historically appeared more informally, often at the initiative of the representative, without prior court appointment. In modern federal and many state practice, the distinctions have narrowed but not disappeared. Researchers should not assume the terms are interchangeable across periods or jurisdictions.
Why It Matters in Research
The standalone term "friend" has almost no independent legal significance. Research should almost always proceed directly to AMICUS, AMICUS CURIAE, or NEXT FRIEND as the operative entry points.
Historical sources, including Anderson's, treat "friend" as an umbrella cross-reference leading to these compound terms, which reflects how the term functions in older case law and equity pleading. In equity practice, next friend appearances were common for married women (then under coverture disabilities) and minors—contexts that have largely dissolved but that researchers will encounter constantly in pre-twentieth-century materials. The equity context is essential: a next friend action in an 1870 record does not mean the same procedural thing as a similar motion today.
For amicus curiae, the evolution is in the opposite direction: the role has expanded dramatically. In early common law and nineteenth-century American practice, amicus appearances were rare, informal, and genuinely disinterested. Modern amicus practice—particularly in appellate and Supreme Court proceedings—often involves highly interested parties using the amicus form to advance advocacy positions. Historical dictionary entries describing the amicus as "disinterested" reflect the original norm, not current reality. Researchers working across time periods must track this shift carefully.
The Wiktionary sense of "friend" as a social networking action is irrelevant to legal research but occasionally surfaces in contemporary litigation involving social media evidence, privacy law, and harassment statutes—not as a term of art, but as a factual predicate.
Historical Dictionary Support
Anderson's Dictionary of Law treats "friend" primarily as a pointer to AMI and AMICUS, offering brief definitions of the two compound forms. The entry confirms the core historical understanding: a friend of the court is disinterested and typically a bar member; a next friend acts for one not sui juris. Anderson's definition is consistent with what one finds across nineteenth-century legal dictionaries, which generally aligned on these two meanings without significant divergence.
What historical dictionaries miss is the procedural evolution of both concepts. Anderson's captures the definitional snapshot but does not address the growing formalization of amicus practice in appellate courts or the increasing court oversight of next friend relationships that developed through the twentieth century. Researchers relying solely on historical dictionary definitions will have accurate foundational meanings but will need supplemental sources to understand how practice developed.
Jurisdictional Note
Next friend practice varies by jurisdiction. Federal courts (and most state courts) now require some form of court approval or at least compliance with specific procedural rules before a next friend may proceed on another's behalf. The informality suggested by historical sources does not reflect current federal or most modern state practice.
Encyclopedia Cross-Reference
See AMICUS CURIAE