\ 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 combinationtrivia 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)

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 maddish (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 Like a mad scientist, the person behind the counter at Sub Zero Ice Cream in Deer Park is obscured in a blast of fog. Yvette Orozco, Houston Chronicle, "Deer Park shop is where ice cream meets weird science," 5 Sep. 2019 Royals There are dozens of wild rumors out there about Meghan Markle, but according to a new report from the Daily Express, only one is currently making Prince Harry mad. Christopher Rosa, Glamour, "Prince Harry Is Reportedly Very Mad Over This Specific Meghan Markle Rumor," 5 Apr. 2019 Matt Nagy stepped to the lectern still trying to process that absolutely mad finish. Rich Campbell, chicagotribune.com, "Column: Yes, it was ugly. Yes, it was heart-stopping. And, yes, it counts: Bears 16, Broncos 14.," 16 Sep. 2019 Giants reliever Tony Watson first chose Ryan Vogelsong, but said the current minor league coach might be too mad if the Giants were playing poorly. Kerry Crowley, The Mercury News, "Which San Francisco Giants players will be breakout stars (as media members)?," 13 Sep. 2019 Susan drives me mad with her long scholarly explanations of things one only needs the eyes and ears of someone like Irene to see. Leslie Jamison, The New Republic, "The Remaking of Susan Sontag," 12 Sep. 2019 In the context, the statement seemed out of place, perhaps even slightly mad. Alexander Thomas, Quartz, "The problem with wanting to reverse aging that no one talks about," 30 Aug. 2019 Forced busing was a mad combination of sociological scientism and judicial overreach. Nr Editors, National Review, "The Week," 11 July 2019 Yes, that sentence kinda reads like a weird mad libs, but keep up! Rachel Paige, refinery29.com, "Spider-Man: Far From Home," 5 July 2019

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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Statistics for mad

Last Updated

6 Nov 2019

Time Traveler for mad

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

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More Definitions for mad

\ 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
\ 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

Rhyming Dictionary: Words that rhyme with mad

Spanish Central: Translation of mad

Nglish: Translation of mad for Spanish Speakers

Britannica English: Translation of mad for Arabic Speakers

Comments on mad

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