mad

adjective
\ ˈmad How to pronounce mad (audio) \
madder; maddest

Definition of mad

 (Entry 1 of 5)

1 : arising from, indicative of, or marked by mental disorder not used technically
2a : completely unrestrained by reason and judgment : unable to think in a clear or sensible way driven mad by the pain mad with jealousy
b : incapable of being explained or accounted for a mad decision
3 informal : intensely angry or displeased What are you so mad about? Everyone was mad about the delay. That kind of behavior really gets me mad. I'm so mad I could spit.
4 : carried away by enthusiasm or desire : extremely or excessively fond of or enthusiastic about something or someone mad about horses … there is a nouveau riche demographic mad for diamonds and Lamborghinis …— Kevin D. Williamson often used in combination trivia known to only the most movie-mad film buffsa power-mad villainmoney-mad
5 : affected with rabies : rabid a mad dog
6 : marked by wild gaiety and merriment : hilarious of their childhood, of the mad pranks they played— Winston Churchill
7 : intensely excited : frantic driving him mad with jealousy— Edmund Wilson
8 : marked by intense and often chaotic activity : wild a mad scramble
9 US, informal : great in quantity, amount, extent, or degree making mad money Her performance won her mad respect from fans and peers alike, but the media response was tempered at best.— Joan Morgan
like mad
: to an extreme degree spending like mad working like mad to get the job done on time

mad

verb
madded; madding

Definition of mad (Entry 2 of 5)

: madden

mad

noun

Definition of mad (Entry 3 of 5)

1 : a fit or mood of bad temper
2 : anger, fury

mad

adverb

Definition of mad (Entry 4 of 5)

informal
: very, extremely We were mad tight, many of us born and raised in this same spot.— Sister Souljah

Definition of MAD (Entry 5 of 5)

mutual assured destruction; mutually assured destruction

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Other Words from mad

Adjective

maddish \ ˈma-​dish How to pronounce MAD (audio) \ adjective

Examples of mad in a Sentence

Adjective If you keep teasing that dog, you'll make him mad. What are you so mad about? That guy makes me so mad! a movie about a mad scientist She's mad for a cute boy in her class. He's mad keen on sailing. Verb her endless excuses for not doing the work madded her overburdened coworkers Noun watch out, the boss has got a bit of a mad on just now
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Recent Examples on the Web: Adjective As for Dixie, many got mad at her for throwing up after trying a snail in the paella prepared for her by a professional chef. Carolyn Twersky, Seventeen, "Dixie D'Amelio and James Charles Discuss the "Dinner With The D'Amelios" Controversy," 9 Dec. 2020 But after his senator, Tony Guarisco, wouldn’t return his phone calls, Foster got mad and challenged the incumbent in 1987 in a move that became part of his political lore. Tyler Bridges, NOLA.com, "Remembering Mike Foster: a 2-term Louisiana governor with a long list of accomplishments," 4 Oct. 2020 In the mad rush to the airport, your brain is completely preoccupied with minute details. Globe Staff, BostonGlobe.com, "You think you miss everything about travel. I’m here to remind you that it’s not always glamorous," 17 Feb. 2021 The source was the eponymous novel by the Polish sci-fi writer Stanisław Lem, in which a sentient ocean planet invades the consciousness of human visitors and drives them mad. Alex Ross, The New Yorker, "The Drenching Richness of Andrei Tarkovsky," 8 Feb. 2021 Avid followers of online controversies may recall Music as the thing that made a lot of neurodivergent people mad at Sia. Jen Chaney, Vulture, "The Biggest Snubs and Surprises of the 2021 Golden Globe Nominations," 3 Feb. 2021 These types would never shell out money based on a mad president’s tweet or the offbeat musings of a CEO smoking weed on Joe Rogan’s show. Anonymous, The New Republic, "I Bought Tens of Thousands of Dollars of GameStop Stock. And I Have No Regrets.," 1 Feb. 2021 As mad over hoppiness as North Texas brewers continue to be, stout experimentation has been gathering a head of steam in the past couple of years. Kelly Dearmore, Dallas News, "New False Idol Brewing in North Richland Hills offers wide range of IPAs, stouts, sours and ‘beertails’," 29 Jan. 2021 But there was a specific second-half non-call that had the Cavaliers hopping mad. Chris Fedor, cleveland, "J.B. Bickerstaff wants more respect for Cleveland Cavaliers: ‘It’s hard to overcome the champs plus’," 26 Jan. 2021

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

Adjective

before the 12th century, in the meaning defined at sense 1

Verb

14th century, in the meaning defined above

Noun

1834, in the meaning defined at sense 1

Adverb

1895, in the meaning defined above

History and Etymology for mad

Adjective, Verb, and Noun

Middle English medd, madd, from Old English gemǣd, past participle of *gemǣdan to madden, from gemād silly, mad; akin to Old High German gimeit foolish, crazy

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Time Traveler for mad

Time Traveler

The first known use of mad was before the 12th century

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Statistics for mad

Last Updated

7 Mar 2021

Cite this Entry

“Mad.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/mad. Accessed 8 Mar. 2021.

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More Definitions for mad

mad

adjective
\ ˈmad How to pronounce mad (audio) \
madder; maddest

Kids Definition of mad

1 : angry He's mad at his brother.
2 : insane sense 1 … has the whole world gone mad today?— Christopher Paul Curtis, The Watsons
3 : done or made without thinking a mad promise
4 : infatuated She is mad about horses.
5 : having rabies a mad dog
6 : marked by intense and often disorganized activity At the end of the game, there was a mad scramble.
like mad
: with a great amount of energy or speed The crowd cheered like mad. He ran like mad.

Other Words from mad

madly adverb
madness noun

mad

adjective
\ ˈmad How to pronounce mad (audio) \
madder; maddest

Medical Definition of mad

1 : arising from, indicative of, or marked by mental disorder not used technically
2 : affected with rabies : rabid

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More from Merriam-Webster on mad

Thesaurus: All synonyms and antonyms for mad

Nglish: Translation of mad for Spanish Speakers

Britannica English: Translation of mad for Arabic Speakers

Comments on mad

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