1

mad

play
adjective \ˈmad\

Definition of mad

madder

;

maddest

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

  2. 2a :  completely unrestrained by reason and judgment :  unable to think in a clear or sensible way driven mad by the pain mad with jealousyb :  incapable of being explained or accounted for a mad decision

  3. 3 :  carried away by intense anger :  very angry :  furious mad about the delay

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

  5. 5 :  affected with rabies :  rabid a mad dog

  6. 6 :  marked by wild gaiety and merriment :  hilarious of their childhood, of the mad pranks they played — Winston Churchill

  7. 7 :  intensely excited :  frantic driving him mad with jealousy — Edmund Wilson

  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 working like mad to get the job done on time

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

Origin and Etymology of mad

see 1mad


First Known Use: 14th century


3

mad

noun

Definition of mad

  1. 1 :  a fit or mood of bad temper

  2. 2 :  anger, fury

Examples of mad in a sentence

  1. watch out, the boss has got a bit of a mad on just now

Origin and Etymology of mad

see 1mad


First Known Use: 1834


MAD

abbreviation

Definition of MAD

  1. mutual assured destruction; mutually assured destruction



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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