1

mad

play
adjective \ˈmad\

Definition of mad

madder

maddest

  1. 1 :  disordered in mind :  insane

  2. 2 a :  completely unrestrained by reason and judgment <driven mad by the pain> b :  incapable of being explained or accounted for <a mad decision>

  3. 3 :  carried away by intense anger :  furious <mad about the delay>

  4. 4 :  carried away by enthusiasm or desire <mad about horses>

  5. 5 :  affected with rabies :  rabid

  6. 6 :  marked by wild gaiety and merriment :  hilarious

  7. 7 :  intensely excited :  frantic

  8. 8 :  marked by intense and often chaotic activity :  wild <a mad scramble>

maddish

play \ˈma-dish\ adjective

like mad

  1. :  to an extreme degree <spending like mad>

Examples of mad in a sentence

  1. If you keep teasing that dog, you'll make him mad.

  2. What are you so mad about?

  3. That guy makes me so mad!

  4. a movie about a mad scientist

  5. She's mad for a cute boy in her class.

  6. He's mad keen on sailing.

Origin and Etymology of mad

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


First Known Use: before 12th century


2

mad

verb

Definition of mad

madded

madding

  1. :  madden

Examples of mad in a sentence

  1. <her endless excuses for not doing the work madded her overburdened coworkers>

14th Century

First Known Use of mad

14th century


3

mad

noun

Definition of mad

  1. 1 :  a fit or mood of bad temper

  2. 2 :  anger, fury


MAD

abbreviation

Definition of MAD

  1. mutual assured destruction; mutually assured destruction



MAD Defined for English Language Learners

1

mad

play
adjective \ˈmad\

Definition of mad for English Language Learners

  • : very angry

  • : having or showing severe mental illness

  • : unable to think in a clear or sensible way


MAD Defined for Kids

mad

play
adjective \ˈmad\

Definition of mad for Students

madder

maddest

  1. 1 :  angry <He's mad at his brother.>

  2. 2 :  insane 1 <… has the whole world gone mad today? — Christopher Paul Curtis, The Watsons>

  3. 3 :  done or made without thinking <a mad promise>

  4. 4 :  infatuated <She is mad about horses.>

  5. 5 :  having rabies <a mad dog>

  6. 6 :  marked by intense and often disorganized activity <At the end of the game, there was a mad scramble.>

madly

adverb

madness

noun

like mad

  1. :  with a great amount of energy or speed <The crowd cheered like mad.> <He ran like mad.>


Medical Dictionary

mad

play
adjective \ˈmad\

Medical Definition of mad

madder

;

maddest

  1. 1:  arising from, indicative of, or marked by mental disorder—not used technically

  2. 2:  affected with rabies :  rabid



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