mad·​man | \ ˈmad-ˌman How to pronounce madman (audio) , -mən\

Definition of madman

: a man who is or acts as if insane

Keep scrolling for more

Synonyms for madman


daredevil, devil, madcap

Visit the Thesaurus for More 

Examples of madman in a Sentence

a celebrity being stalked by a madman as far as I'm concerned, anyone who likes skydiving is a madman

Recent Examples on the Web

In other, saner times, leveraging the political persuasions of absolute madmen against a political opponent would be a signal for a gentleman to rise from the table and leave the room without comment. John Kass, Twin Cities, "John Kass: Weaponizing the dead of El Paso and Dayton," 9 Aug. 2019 That goal cancelled out Odsonne Edouard's opener for Celtic and Kent celebrated like a madman, bounding off to the corner flag and shushing the home fans at Celtic Park., "Ryan Kent: 5 Things to Know About Liverpool Star Wanted By Rangers Boss Steven Gerrard," 12 July 2019 Called alternatively a Levantine, a Turk, and a madman, Lurie’s outsiderness confines him to a life of constant movement. John Freeman,, "Téa Obreht’s ‘Inland’ a poetic journey into loneliness and the American West," 15 Aug. 2019 Trump is not responsible for the actions of a madman. Marc A. Thiessen, The Mercury News, "Thiessen: If Trump is responsible for El Paso, Democrats are responsible for Dayton," 8 Aug. 2019 Trump didn’t encourage Crusius’ madman prescription for this country. Gilbert Garcia,, "GOP blames toxic popular culture, but not Trump, for violence," 7 Aug. 2019 After hearing Bobby openly admit his insanity, Rebecca does the only thing there is to do: Dump the madman. Elena Nicolaou,, "Billions Season 4 Finale Recap: Et Tu, Bobby?," 4 June 2019 Because the evil its heroine is asked to thwart lies not in treacherous robots or a nuclear bomb or a madman threatening world domination but rather bad cosmetics. Kirk Honeycutt, The Hollywood Reporter, "'Catwoman': THR's 2004 Review," 23 July 2019 Chief among the conflicts is the antipathy between guitarist Perkins (Brett Benowitz), Phillips’ first big star, and flashy newcomer Lewis (Ben Van Diepen), the madman pianist. James Hebert, San Diego Union-Tribune, "Review: Lamb’s Players’ ‘Million Dollar Quartet’ gives real-life rockers a run for their money in Vista," 22 July 2019

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

See More

First Known Use of madman

14th century, in the meaning defined above

Keep scrolling for more

Learn More about madman

Dictionary Entries near madman

mad keen on




mad money



Statistics for madman

Last Updated

2 Sep 2019

Look-up Popularity

Time Traveler for madman

The first known use of madman was in the 14th century

See more words from the same century

Keep scrolling for more

More Definitions for madman



English Language Learners Definition of madman

: a man who has severe mental illness : an insane man
informal : a man who acts in a wild and uncontrolled way


mad·​man | \ ˈmad-ˌman How to pronounce madman (audio) , -mən\
plural madmen\ -​mən \

Kids Definition of madman

: a man who is or acts as if insane


mad·​man | \ ˈmad-ˌman, -mən How to pronounce madman (audio) \

Medical Definition of madman

: a man who is or acts as if insane

Keep scrolling for more

More from Merriam-Webster on madman

Rhyming Dictionary: Words that rhyme with madman

Thesaurus: All synonyms and antonyms for madman

Spanish Central: Translation of madman

Nglish: Translation of madman for Spanish Speakers

Comments on madman

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


recurring in steady succession

Get Word of the Day daily email!

Test Your Vocabulary

Musical Words Quiz

  • gramophone
  • Which word describes a musical performance marked by the absence of instrumental accompaniment?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

Word Winder's CrossWinder

Test Your Knowledge - and learn some interesting things along the way.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!