com·​plain·​ant | \kəm-ˈplā-nənt \

Definition of complainant 

1 : the party who makes the complaint in a legal action or proceeding

2 : one who complains

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Synonyms & Antonyms for complainant


plaintiff, suer



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Examples of complainant in a Sentence

the complainant charged that the defendant had broken the ironclad contract that both had signed

Recent Examples on the Web

Liberty would not identify the complainant of 3 years ago, the nature of that complaint, or the mechanism by which the alleged complaint was made. Meredith Wadman, Science | AAAS, "Prominent geneticist out at UC Irvine after harassment finding," 29 June 2018 The complainant reported that an assault had occurred between two employees the previous week. Washington Post, "Fairfax County crime report," 4 July 2018 Petty theft, Robinwood Avenue: A complainant at 9:20 a.m. April 28 reported discovering a bicycle was stolen. Bruce Geiselman,, "Lakewood police investigate attempted burglary: police blotter," 5 May 2018 One complainant reported that his form was rejected because of employer ineligibility while his co-worker’s was approved a week later. Ron Lieber, New York Times, "Who Is a Public Servant? Borrowers Have a Lot Riding on the Answer," 13 Apr. 2018 Pell’s lawyer Robert Richter on Monday did not object to the complainants appearing in court on a television screen rather than in person. Washington Post, "Cardinal’s alleged sex victims testify in Australian court," 5 Mar. 2018 Grand theft of a motor vehicle, Beach Avenue: A complainant told police about 9:30 a.m. Feb. 12 that his car was stolen. Bruce Geiselman,, "Lakewood police investigate business break-in: police blotter," 17 Feb. 2018 These charges relate to 12 complainants and are alleged to have happened between 1979 and 1991, when the victims were aged between eight and 15., "Former Crewe Alexandra Coach Barry Bennell Pleads Guilty to 7 Child Sex Offences," 8 Jan. 2018 The complainant sent pictures and a license plate number, which showed the vehicle registered to a woman in Rogers. Houston Chronicle, "Game warden field notes," 1 July 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'complainant.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of complainant

15th century, in the meaning defined at sense 1

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Last Updated

3 Dec 2018

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The first known use of complainant was in the 15th century

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English Language Learners Definition of complainant

law : a person who makes a formal charge in court saying that someone has done something wrong


com·​plain·​ant | \kəm-ˈplā-nənt \

Legal Definition of complainant 

: the party (as a plaintiff or petitioner) who makes the complaint in a legal action or proceeding

More from Merriam-Webster on complainant

Thesaurus: All synonyms and antonyms for complainant

Nglish: Translation of complainant for Spanish Speakers

Comments on complainant

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the figure or shape of a crescent moon

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