Plaintiff

The person who initiates a civil lawsuit by suing the defendant. In the style of cause Smith v. Jones, one can assume that Smith is the plaintiff being sued by Jones (but this is not necessarily always the case since Smith could have originally been a defendant, and if Smith lost at trial and there was an appeal decision, the appellant in some jurisdictions is sometimes the first named party in the style of cause).

Person who initiates a lawsuit, asking the court to grant a remedy for the defendant’s alleged wrongful acts.