• "The other passengers thought him mad."
    "The other passengers thought him mad."
  • WordNet 3.6
    • adj mad roused to anger "stayed huffy a good while"- Mark Twain","she gets mad when you wake her up so early","mad at his friend","sore over a remark"
    • adj mad affected with madness or insanity "a man who had gone mad"
    • adj mad marked by uncontrolled excitement or emotion "a crowd of delirious baseball fans","something frantic in their gaiety","a mad whirl of pleasure"
    • adj mad very foolish "harebrained ideas","took insane risks behind the wheel","a completely mad scheme to build a bridge between two mountains"
    • ***

Additional illustrations & photos:

The Fifth of November anticipated in Quite Mad-eira The Fifth of November anticipated in Quite Mad-eira

Webster's Revised Unabridged Dictionary
  • Interesting fact: The artist Vincent Van Gogh sliced part of his ear off in madness
    • Mad p. p. of Made.
    • n Mad (Zoöl) An earthworm.
    • Mad Angry; out of patience; vexed; as, to get mad at a person.
    • Mad Disordered in intellect; crazy; insane. "I have heard my grandsire say full oft,
      Extremity of griefs would make men mad ."
    • Mad Excited beyond self-control or the restraint of reason; inflamed by violent or uncontrollable desire, passion, or appetite; as, to be mad with terror, lust, or hatred; mad against political reform. "It is the land of graven images, and they are mad upon their idols.""And being exceedingly mad against them, I persecuted them even unto strange cities."
    • Mad Extravagant; immoderate. "Be mad and merry.""Fetching mad bounds."
    • Mad Furious with rage, terror, or disease; -- said of the lower animals; as, a mad bull; esp., having hydrophobia; rabid; as, a mad dog.
    • Mad Having impaired polarity; -- applied to a compass needle.
    • Mad Proceeding from, or indicating, madness; expressing distraction; prompted by infatuation, fury, or extreme rashness. "Mad demeanor.""Mad wars destroy in one year the works of many years of peace.""The mad promise of Cleon was fulfilled."
    • v. i Mad To be mad; to go mad; to rave. See Madding. "Festus said with great voice, Paul thou maddest ."
    • v. t Mad To make mad or furious; to madden. "Had I but seen thy picture in this plight,
      It would have madded me."
    • ***
Century Dictionary and Cyclopedia
  • Interesting fact: Every queen named Jane has either been murdered, imprisoned, gone mad, died young, or been dethroned.
    • mad Disordered in intellect; demented; crazy; insane: said of persons.
    • mad Furious from disease or other cause; enraged; rabid: said of animals: as, a mad dog; a mad bull.
    • mad Under the influence of some uncontrollable emotion. Very angry; enraged; furious. [Now chiefly colloq.]
    • mad Wildly or recklessly frolicsome: said of persons or of their acts.
    • mad Excited with immoderate curiosity, longing, admiration, or devotion; infatuated.
    • mad Proceeding from or indicating frenzy; prompted by infatuation or fury.
    • mad Synonyms Deranged, delirious, frenzied, raging.
    • mad Exasperated.
    • n mad Madness; intoxication.
    • mad To make mad or furious; distract; enrage; madden.
    • mad To be mad; go mad.
    • mad To rage; fight madly.
    • n mad A maggot or grub.
    • n mad An obsolete form of made, past participle of make.
    • mad Abbreviations of Madam.
    • ***
Chambers's Twentieth Century Dictionary
  • Interesting fact: If a small amount of liquor were placed on a scorpion, it would instantly go mad and sting itself to death.
    • adj Mad mad (comp. Mad′der; superl. Mad′dest) disordered in intellect: insane: proceeding from madness, rabid: troubled in mind: excited with any violent passion or appetite: furious with anger
    • v.t Mad (Shak.) to drive mad
    • adj Mad fond of wild and reckless action
    • v.i Mad to become mad: to act as one mad
    • ***


  • Horace
    “Anger is short madness”
  • Salvador Dali
    “There is only one difference between a madman and me. I am not mad.”
  • Alexander Pope
    “The worst of madmen is a saint run mad.”
  • Samuel Beckett
    “We are all born mad. Some remain so.”
  • Baltasar Gracian
    “Better mad with the rest of the world than wise alone.”
  • Horace
    “I teach that all men are mad.”


As mad as a hatter - This simile means that someone is crazy or behaves very strangely. In the past many people who made hats went insane because they had a lot of contact with mercury.
As mad as a wrongly shot hog - (USA) If someone is as mad as a wrongly shot hog, they are very angry. (Same as, Angry as a bear or Angry as a bull).
Hopping mad - If you're hopping mad, you are extremely angry.
Mad as a badger - If someone is as mad as a badger, they are crazy.
Mad as a bag of hammers - Someone who is as mad as a bag of hammers is crazy or stupid. ('Daft as a bag of hammers' is also used.)
Mad as a cut snake - (AU) One who is mad as a cut snake has lost all sense of reason, is crazy, out of control.
Mad as a hornet - (USA) If someone is as mad as a hornet, they are very angry indeed.
Mad as a March hare - Someone who is excitable and unpredictable is as mad as a March hare.
Mad as a wet hen - If someone is as mad as a wet hen, they are extremely angry.
Method in his madness - If there's method in someone's madness, they do things in a strange and unorthodox way, but manage to get results.


Webster's Revised Unabridged Dictionary
AS. gemd, gemād, mad; akin to OS. gemd, foolish, OHG. gameit, Icel. meia, to hurt, Goth. gamáids, weak, broken.


In literature:

Not mad as you pretended to be, but mad on this one point.
"Paul Patoff" by F. Marion Crawford
His mission is to keep this mad world sane.
"Mistress Anne" by Temple Bailey
Imagine her sittin' there stitchin' like mad Wid a needle like that in her hand!
"The Book of Humorous Verse" by Various
They call you 'Mad Rochester'; you know that.
"The Man Who Lost Himself" by H. De Vere Stacpoole
What strange madness had come over the woman he loved?
"The Root of Evil" by Thomas Dixon
I was mad to save her.
"The Blue Wall" by Richard Washburn Child
Desire of the lady Hilda has made him mad.
"The Valley of the Kings" by Marmaduke Pickthall
The thought makes me mad.
"Roger Trewinion" by Joseph Hocking
The mad are not a minority because they are not a corporate body; and that is what their madness means.
"Eugenics and Other Evils" by G. K. Chesterton
And yet the madness of his thought appealed to him too.
"The Day of Judgment" by Joseph Hocking

In poetry:

"Enough, enough of longing and wail!
Oh, bird, I pray thee, be glad!
Sing to me once, dear nightingale,
The old song, merry mad.
"The Thankless Lady" by George MacDonald
Smack went the whip, round went the wheels,
Were never folk so glad,
The stones did rattle underneath,
As if Cheapside were mad.
"The Diverting History Of John Gilpin, Showing How He Went Farther Than He Intended, And Came Safe Ho" by William Cowper
The stream was black, it sounded deep
As it rush'd the rocks between,
It offer'd well, for madness fired
The breast of Gondoline.
"Gondoline" by Henry Kirke White
Every skiff a big ship seemeth,
Every bush with tall wings clad;
Every man his good brain deemeth
The only brain that is not mad.
"Lita of the Nile" by Richard Doddridge Blackmore
The curses of gold are about thee,
And thy sorrow deepeneth still;
One madness within and without thee,
One battle blind and shrill.
"The City (2)" by Archibald Lampman
Woe once more, red woe for Kerry,
Blood-drops were as mountain dew
When that cry so mad, yet merry,
Rang and rang--"O'Donnell Aboo!"
"O’Donnell Aboo" by Clinton Scollard

In news:

The Madness Cave, in the Motherlode area, holds the largest and steepest collection of 5.13+ climbs in the Re.
Going Mad for Charles Dickens .
Mad Men debuted in 2007, suddenly making mid-century modernism a white-hot trend in the furniture and design market.
A power-mad dictator who may be about to lose them.
If there was one message that was made clear following Sunday's Grammy awards, it was this: Don't make Miranda Lambert mad.
More madness in the month of March.
A month ago, in my column about March Madness, I cautioned that this year, the month of March would have a hard time matching the furious pace of February for local events and activities.
UNIVERSITY PARK — The SMU men's basketball team's 63-62 win over Jacksonville on Saturday in the second round of the Tournament took postseason madness to another level.
'Mad Men' era women: Their tale.
'Mad Men' in a madhouse, 50 years ago.
Throw a Mad Men Cocktail Party .
Star Martin Freeman said he doesn't think of his role as playing an iconic character, because "you'd go mad if you did.".
Football season is over, baseball season hasn't started, and March Madness is still a few weeks away.
She wasn't crazy (or trying to escape a mad man)—she was going it for a good cause.
The Mad Strangler of Boston.

In science:

Hechler proved that µ ∈ MAD(µ) if λcf µ < µ for every λ < µ.
On two problems of Erdos and Hechler: New methods in singular Madness
Erd˝os and Hechler asked in whether it is consistent that µ /∈ MAD(µ) for some singular cardinal µ and, more concretely, whether Martin’s axiom together with 2ℵ0 > ℵω implies that ℵω /∈ MAD(ℵω ).
On two problems of Erdos and Hechler: New methods in singular Madness
Both problems are settled affirmatively by the general results below on MAD(µ) for a singular µ.
On two problems of Erdos and Hechler: New methods in singular Madness
Thus, if bcf µ > µ it follows from (1) that aµ > µ, hence µ /∈ MAD(µ); and if acf µ < µ it follows from (2) that µ ∈ MAD(µ).
On two problems of Erdos and Hechler: New methods in singular Madness
M A + 2ℵ0 > ℵω =⇒ ℵω /∈ MAD(ℵω ). (a) 2cf µ < µ =⇒ µ ∈ MAD(µ) for every singular µ. which, respectively, settle in the affirmative both problems of Erd˝os and Hechler from .
On two problems of Erdos and Hechler: New methods in singular Madness