mad: Meaning and Definition of


Pronunciation: (mad), [key]
— adj., n., v., mad•der, mad•dest, mad•ded, mad•ding.
  1. mentally disturbed; deranged; insane; demented.
  2. enraged; greatly provoked or irritated; angry.
  3. (of animals) a mad bull.
    1. abnormally furious; ferocious:a mad bull.
    2. affected with rabies; rabid:a mad dog.
  4. extremely foolish or unwise; imprudent; irrational: a mad scheme to invade France.
  5. wildly excited or confused: frantic: mad haste.
  6. overcome by desire, eagerness, enthusiasm, etc.; excessively or uncontrollably fond; infatuated: He's mad about the opera.
  7. wildly gay or merry; enjoyably hilarious: to have a mad time at the Mardi Gras.
  8. (of wind, storms, etc.) furious in violence: A mad gale swept across the channel.
  9. with great haste, impulsiveness, energy, or enthusiasm: She ran like mad to catch the bus.
  10. completely insane.
  1. an angry or ill-tempered period, mood, or spell: The last time he had a mad on, it lasted for days.
  1. to make mad.
  1. to be, become, or act mad.


Pronunciation: (mad), [key]
— n.
  1. See


Pronunciation: [key]
  1. madam.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
See also:
  • mad (Thesaurus)