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mad

[mad] /mæd/
adjective, madder, maddest.
1.
mentally disturbed; deranged; insane; demented.
2.
enraged; greatly provoked or irritated; angry.
3.
  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.
noun
9.
an angry or ill-tempered period, mood, or spell:
The last time he had a mad on, it lasted for days.
verb (used with object), madded, madding.
10.
Archaic. to make mad.
verb (used without object), madded, madding.
11.
Archaic. to be, become, or act mad.
Idioms
12.
like mad, Informal. with great haste, impulsiveness, energy, or enthusiasm:
She ran like mad to catch the bus.
13.
mad as a hatter, completely insane.
Origin
900
before 900; Middle English mad (adj.), madden (intransitive v., derivative of the adj.); Old English gemǣd(e)d, past participle of *gemǣdan to make mad, akin to gemād mad, foolish; cognate with Old Saxon gemēd, Old High German gimeit foolish
Related forms
half-mad, adjective
half-madly, adverb
half-madness, noun
quasi-mad, adjective
quasi-madly, adverb
unmad, adjective
unmadded, adjective
Synonyms
1. lunatic, maniacal, crazed, crazy. 2. furious, exasperated, raging, wrathful, irate. 4. ill-advised; unsafe, dangerous, perilous. Mad, crazy, insane are used to characterize wildly impractical or foolish ideas, actions, etc. Mad suggests senselessness and excess: The scheme of buying the bridge was absolutely mad. In informal usage, crazy suggests recklessness and impracticality: a crazy young couple. Insane is used with some opprobrium to express unsoundness and possible harmfulness: The new traffic system is simply insane. 5. frenzied.
Antonyms
4. sensible, practical; sound, safe.
Usage note
Mad meaning “enraged, angry” has been used since 1300, and this sense is a very common one. Because some teachers and usage critics insist that the only correct meaning of mad is “mentally disturbed, insane,” mad is often replaced by angry in formal contexts: The president is angry at Congress for overriding his veto.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for quasimad

mad

/mæd/
adjective madder, maddest
1.
mentally deranged; insane
2.
senseless; foolish a mad idea
3.
(often foll by at) (informal) angry; resentful
4.
foll by about, on, or over; often postpositive. wildly enthusiastic (about) or fond (of) mad about football, football-mad
5.
extremely excited or confused; frantic a mad rush
6.
temporarily overpowered by violent reactions, emotions, etc mad with grief
7.
(of animals)
  1. unusually ferocious a mad buffalo
  2. afflicted with rabies
8.
(informal) like mad, with great energy, enthusiasm, or haste; wildly
9.
mad as a hatter, crazily eccentric
verb mads, madding, madded
10.
(archaic) to make or become mad; act or cause to act as if mad
Derived Forms
maddish, adjective
Word Origin
Old English gemǣded, past participle of gemǣdan to render insane; related to gemād insane, and to Old High German gimeit silly, crazy, Old Norse meitha to hurt, damage

MAD

/mæd/
noun acronym (US)
1.
mutual assured destruction: a theory of nuclear deterrence whereby each side in a conflict has the capacity to destroy the other in retaliation for a nuclear attack
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for quasimad
mad
O.E. gemædde (pl.) "out of one's mind" (usually implying also violent excitement), also "foolish," earlier gemæded "rendered insane," pp. of a lost verb *gemædan "to make insane or foolish" (related to gemad "mad"), from P.Gmc. *ga-maid-jan, demonstrative form of *ga-maid-az "changed (for the worse), abnormal" (cf. O.S. gimed "foolish," O.H.G. gimeit "foolish, vain, boastful," Goth. gamaiþs "crippled, wounded," O.N. meiða "to hurt, maim"), from intensive prefix *ga- + PIE *moito-, pp. of base *mei- "to change" (cf. L. mutare "to change," mutuus "done in exchange," migrare "to change one's place of residence;" see mutable). Emerged in M.E. to replace the more usual O.E. word, wod (see wood (adj.)). Sense of "beside oneself with excitement or enthusiasm" is from early 14c. Meaning "beside oneself with anger" is attested from c.1300, but deplored by Rev. John Witherspoon (1781) as an Americanism, and now competes in Amer.Eng. with angry for this sense. Of dogs, "affected with rabies," from 1800. Phrase mad as a March hare is attested from 1520s, via notion of breeding season; mad as a hatter (1857) is said to be from erratic behavior caused by prolonged exposure to poison mercuric nitrate, used in making felt hats. Mad as a wet hen is from 1823. Mad money is attested from 1922; mad scientist is from 1940.
Online Etymology Dictionary, © 2010 Douglas Harper
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quasimad in Medicine

mad (mād)
adj.

  1. Angry; resentful.

  2. Suffering from a disorder of the mind; insane.

  3. Affected by rabies; rabid.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Slang definitions & phrases for quasimad

mad

adjective
  1. Angry (1400s+)
  2. Excellent; exciting; crazy (1950s+ Bop & cool talk)
Related Terms

like mad


The Dictionary of American Slang, Fourth Edition by Barbara Ann Kipfer, PhD. and Robert L. Chapman, Ph.D.
Copyright (C) 2007 by HarperCollins Publishers.
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Related Abbreviations for quasimad

MAD

  1. Barajas Airport (Madrid, Spain)
  2. Morocco-dirham (currency)
  3. mutually assured destruction
The American Heritage® Abbreviations Dictionary, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Idioms and Phrases with quasimad
The American Heritage® Idioms Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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