ma·​ni·​ac | \ ˈmā-nē-ˌak \

Definition of maniac

2 : a person characterized by an inordinate or ungovernable enthusiasm for something

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Examples of maniac in a Sentence

He's a complete maniac when he's playing football. they should permanently put away the maniac who is responsible for these kidnappings

Recent Examples on the Web

To be sure, Joseph Kesselring’s 1941 black comedy about a family of maniacs, homicidal and otherwise, was a huge Broadway hit that was subsequently turned into a movie starring Cary Grant, then performed four times on network TV. Terry Teachout, WSJ, "Kid Tested, Mother Approved," 12 Sep. 2018 Which is just to say that, in the aggregate, Trump is far from a maniac who the Republican establishment is restraining. Matthew Yglesias, Vox, "There never were any “adults in the room”," 21 Dec. 2018 In Brazil — which still hasn’t quite gotten over Germany’s 7-1 humiliation of the home team during the 2014 World Cup semifinals — several maniacs staged a mock funeral for Germany, parading down a street with caskets draped in the German flag. Sean Gregory, Time, "32 Teams Entered, 16 Remain. Your Ultimate Guide to the World Cup Knockout Stage," 29 June 2018 The first and most important one is sticking the ball in the net and celebrating like a maniac. Jonathan Clegg, WSJ, "Harry Kane: English Soccer’s Clark Kent," 18 June 2018 Sproles, who will turn 35 next month, is 5-6 and 190 pounds of bionic maniac. Marcus Hayes,, "Duce Staley and Donnel Pumphrey make peace during Eagles offseason | Marcus Hayes," 23 May 2018 Best Application of Technology: Esports Arena Las Vegas Video gaming maniacs will love the Esports Arena, which opened in the spring of 2018 in the old LAX nightclub space at Luxor Las Veags. Matt Villano, Sunset, "Top 10 Things to Do in Las Vegas with Kids," 22 Jan. 2018 The only truly terrifying one, a knife-wielding maniac, is an uncomfortable and tone-deaf stereotype of a Mexican gangster that the film could have easily done without. Barbara Vandenburgh, azcentral, "Gabrielle Union kicks serious butt in violent ‘Breaking In’," 11 May 2018 Also called the East Area Rapist, the mystery maniac was blamed for a battery of crimes in the county starting in the late 1970s and ending in 1981. Andrew Blankstein, NBC News, "Golden State Killer case: Ex-cop arrested in serial murder-rape cold case," 25 Apr. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'maniac.' 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 maniac

circa 1763, in the meaning defined at sense 1

History and Etymology for maniac

Late Latin maniacus maniacal, from Greek maniakos, from mania

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Dictionary Entries near maniac







manic depression

Statistics for maniac

Last Updated

2 Jan 2019

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Time Traveler for maniac

The first known use of maniac was circa 1763

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More Definitions for maniac



English Language Learners Definition of maniac

: someone who is violent and mentally ill

: a person who behaves in a very wild way

: a person who is extremely enthusiastic about something


ma·​ni·​ac | \ ˈmā-nē-ˌak \

Kids Definition of maniac

1 : a person who is or behaves as if insane
2 : a person who is extremely enthusiastic about something

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More from Merriam-Webster on maniac

Rhyming Dictionary: Words that rhyme with maniac

Thesaurus: All synonyms and antonyms for maniac

Spanish Central: Translation of maniac

Nglish: Translation of maniac for Spanish Speakers

Britannica English: Translation of maniac for Arabic Speakers

Comments on maniac

What made you want to look up maniac? Please tell us where you read or heard it (including the quote, if possible).


tremendous in size, volume, or degree

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