mad

adjective
\ˈmad \
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 \ 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

Looking back at his experience, Ure isn't mad at the bear. Author: Mitch Borden, Anchorage Daily News, "‘This isn’t how I’m dying’: Teenager recounts bear attack in Naknek boatyard," 24 June 2018 To be mad at Sicario 2 simply for existing in a world where the country that produced it has turned even crueler is choosing the wrong target. Todd Vanderwerff, Vox, "Donald Trump paints the border as a lawless hellhole. But so does American pop culture.," 22 June 2018 Its only goal was to declare that the colonies were mad as hell and not gonna take it any more. Ronnie Polaneczky, Philly.com, "Finding my own patriotism in the turmoil of America in 2018 | Ronnie Polaneczky," 3 July 2018 The wind of late has been blowing like mad and our flying has been cut to a minimum. Meghan Overdeep, Southern Living, "Read a Handwritten Love Letter George Sr. Sent Barbara Bush During World War II," 19 Apr. 2018 From insulated water bottles to portable toilet-paper rolls, here's what our staff never leaves home without Outside staffers love to get outside and when the workday ends, there's a mad dash for the hiking, biking, and running trails. The Editors, Outside Online, "The Gear We Carry in Our Daypacks," 17 Apr. 2018 Trump, who landed in Belgium during the middle of the soccer-mad nation’s World Cup semifinals match, will later head to London, where Prime Minister Theresa May’s government is in turmoil over her plans for exiting the European Union. Jill Colvin, The Seattle Times, "Trump lands in Europe, says Putin ‘easiest’ of his meetings," 10 July 2018 Trump reportedly has distanced himself from Cohen, and Cohen is big mad that the president isn’t paying any of his legal fees. Stephen A. Crockett Jr., The Root, "Michael Cohen Breaks Up With Trump and Makes It Social-Media Official," 5 July 2018 People were very mad that Bryce basically got a slap on the wrist for his actions. Victoria Rodriguez, Seventeen, ""13 Reasons Why" Star Timothy Granaderos Talks About His Most Difficult Scene To Film in Season 2," 30 May 2018

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

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

Verb

see mad entry 1

Noun

see mad entry 1

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Learn More about mad

Dictionary Entries near mad

macushla

macuta

macute

mad

MAD

Madagascar

Madagascar bean

Statistics for mad

Last Updated

9 Oct 2018

Look-up Popularity

Time Traveler for mad

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

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More Definitions for mad

mad

adjective
\ˈmad \
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 \
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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Comments on mad

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