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

Doom Patrol is described as a reimagining of one of DC's most beloved group of outcast superheroes: Robotman, Negative Man, Elasti-Girl and Crazy Jane, who led by modern-day mad scientist Dr. Niles Caulder (The Chief). Lesley Goldberg, The Hollywood Reporter, "'Doom Patrol' Casts Its Elasti-Woman for Live-Action DC Universe Series," 13 July 2018 There is the urge to go spelunking through her books, to descend into the mad caves and walk the corridors and labyrinthine tunnels, in search of meaning (or…treasure? Brittany Allen, Longreads, "Getting Tricked by Helen DeWitt," 9 July 2018 Democrats are mad at Big Tech for being asleep at the wheel during the 2016 election, while Republicans are concerned by biased search results and censorship of conservatives. Bobby Jindal, WSJ, "If Democrats Were Shrewd . . .," 30 Dec. 2018 There are bang-bang plays in every game, and someone will always be mad when a block-charge call doesn’t go their way. Tim Reynolds, The Seattle Times, "After further review, the NBA needs to change its policy," 7 Jan. 2019 Still, a play that had the rest of the nation cracking up likely had the Seahawks steaming mad. Matt Calkins, The Seattle Times, "What was that, Sebastian Janikowski? Decision not to tackle 49ers returner costly in Seahawks loss," 17 Dec. 2018 Arthur also has to deal with a secondary villain who is mad that him for having killed his father in an ocean rescue. Alex Abad-santos, Vox, "Aquaman goes for broke and lands somewhere between overstuffed marine opera and cheesy comic book fun," 11 Dec. 2018 Many fans of The Voice were particularly mad because SandyRedd was eliminated. Eileen Reslen, Country Living, "'The Voice' Eliminations Left Fans Shocked and Angrier Than Ever," 21 Nov. 2018 At first, Mehl wasn’t mad; cancer has given her an understanding of the bad, uncontrollable parts of life. Kayla Webley Adler, Marie Claire, "When Your Dreams of Motherhood Are Destroyed," 1 Oct. 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, 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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Dictionary Entries near mad

macushla

macuta

macute

mad

MAD

Madagascar

Madagascar bean

Statistics for mad

Last Updated

13 Feb 2019

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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More from Merriam-Webster on mad

Rhyming Dictionary: Words that rhyme with mad

Thesaurus: All synonyms and antonyms for 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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