plaintif

Plaintiff is a legal term referring to the party who initiates a civil lawsuit by filing a complaint or petition in court. The plaintiff brings claims against one or more defendants and seeks a remedy, such as monetary damages, an injunction, or specific performance. In common law systems, the plaintiff typically bears the burden to prove the facts and legal elements of the claimed cause of action according to the applicable standard of proof.

The correct English spelling is plaintiff, ending with -iff. The form "plaintif" is considered a misspelling or typographical error in most modern usages. The word originates from Old French plaintif, related to plainte, meaning a complaint or lament. It is distinct from the adjective plaintive, which describes a sounding of sorrow or melancholy.

Jurisdictional variations exist. In some regions, particularly in the United Kingdom and certain civil law-adjacent contexts, the term claimant is more common to describe the party who brings a civil action. Nevertheless, plaintiff remains widely used in many jurisdictions, especially in the United States, to denote the initiating party, while defendants are the parties sued or sued against. Class actions may involve multiple plaintiffs represented collectively.

Procedural context often includes drafting and filing a complaint, service of process on the defendant, and compliance with procedural rules such as deadlines and required pleadings. If a defendant answers, the case proceeds through discovery, motions, and ultimately trial or settlement. The plaintiff’s role is to establish a prima facie case to obtain the requested relief.

See also: Defendant, Complaint, Cause of action, Burden of proof, Civil procedure, Claimant.