plaintiff

noun

plain·​tiff ˈplān-təf How to pronounce plaintiff (audio)
: a person who brings a legal action compare defendant

Did you know?

We won't complain about the origins of plaintiff, although complain and plaintiff are distantly related; both can be traced back to plangere, a Latin word meaning "to strike, beat one's breast, or lament." Plaintiff comes most immediately from Middle English plaintif, itself an Anglo-French borrowing tracing back to plaint, meaning "lamentation." (The English word plaintive is also related.) Logically enough, plaintiff applies to the one who does the complaining in a legal case.

Examples of plaintiff in a Sentence

the judge ruled that the plaintiff's lawsuit was groundless, and he dismissed it
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Kansas City law firm Paul LLP, which represented plaintiffs in that suit, is now assisting NCA All-Star attendees weighing legal action against Varsity and the city of Dallas for alleged negligence in securing the event. Daniel Libit, Sportico.com, 15 Mar. 2025 Supporters of the bill who attended the hearing included the Florida Medical Association, which represents physicians, the Merlin Law Group, a plaintiffs firm, and the Florida Justice Association, a trade and lobbying group for plaintiffs attorneys. Ron Hurtibise, Sun Sentinel, 14 Mar. 2025 The plaintiff in that case, Stella Liebeck, was originally awarded nearly $3 million. Ramishah Maruf, CNN, 14 Mar. 2025 Williams and the other plaintiffs voluntarily dismissed the case later the same year. Kacen Bayless, Kansas City Star, 14 Mar. 2025 See All Example Sentences for plaintiff

Word History

Etymology

Middle English plaintif, from Anglo-French, from pleintif, adjective

First Known Use

14th century, in the meaning defined above

Time Traveler
The first known use of plaintiff was in the 14th century

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Cite this Entry

“Plaintiff.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/plaintiff. Accessed 22 Mar. 2025.

Kids Definition

plaintiff

noun
plain·​tiff ˈplānt-əf How to pronounce plaintiff (audio)
: the complaining party in a lawsuit

Legal Definition

plaintiff

noun
plain·​tiff ˈplān-təf How to pronounce plaintiff (audio)
: the party who institutes a legal action or claim (as a counterclaim) see also complainant, complaint, libellant compare defendant, prosecution
Etymology

Middle French plaintif, from plaintif, adj., grieving, from plaint lamentation, from Latin planctus, from plangere to strike, beat one's breast, lament

More from Merriam-Webster on plaintiff

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