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Dictionary Entries (21 more entries. View all »)
Dictionary.com Unabridged (v 1.1)Cite This Source
mad.
madam.
Dictionary.com Unabridged (v 1.1)
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2006.
Dictionary.com Unabridged (v 1.1)Cite This Source
MAD    Audio Help   [mad] Pronunciation Key
–noun
Mutual Assured Destruction.
Dictionary.com Unabridged (v 1.1)
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2006.
Dictionary.com Unabridged (v 1.1)Cite This Source
mad    Audio Help   [mad] Pronunciation Key adjective, mad·der, mad·dest, noun, verb, mad·ded, mad·ding.
–adjective
1.mentally disturbed; deranged; insane; demented.
2.enraged; greatly provoked or irritated; angry.
3.(of animals)
a.abnormally furious; ferocious: a mad bull.
b.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)
10.Archaic. to make mad.
–verb (used without object)
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: bef. 900; ME mad (adj.), madden (intrans. v., deriv. of the adj.); OE gemǣd(e)d, ptp. of *gemǣdan to make mad, akin to gemād mad, foolish; c. OS geméd, OHG gimeit foolish]

—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 (v 1.1)
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2006.

Thesaurus Entries (4 more entries. View all »)
  Synonym Collection v1.1Cite This Source
Main Entry:  mad
Part of Speech:  adjective
Synonyms:  agitated, angry, berserk, crazy, demented, distracted, distraught, eccentric, fey, furious, idiosyncratic, impetuous, incensed, indignant, insane, irate, livid, loco, lunatic, maniac, maniacal, non compos mentis, obsessed, possessed, psychotic, rabid, raving, resentful, senseless, wild, bedlamite, certifiable, enraged, fuming, infatuated. seeangry, infuriated, irked, outraged, ticked
Source:  Synonym Collection v1.1
Copyright © 2008 by Lexico Publishing Group, LLC.
  Synonym Collection v1.1Cite This Source
Main Entry:  mad
Part of Speech:  noun
Synonyms:  aberration, delirium, dementia, derangement, ecstasy, frenzy, hallucination, insanity, lunacy, madness, mania, rashness, deliration, fanaticism, paranoia, psychosis, schizophrenia
Source:  Synonym Collection v1.1
Copyright © 2008 by Lexico Publishing Group, LLC.
  Roget's II: The New ThesaurusCite This Source
Main Entry:  angry
Part of Speech:  adjective
Definition:  Feeling or showing anger.
Synonyms:  choleric, indignant
Idioms:  hot under the collar
Source:  Roget's II: The New Thesaurus, Third Edition
by the Editors of the American Heritage® Dictionary.
Copyright © 2003, 1995 by Houghton Mifflin Harcourt Publishing Company.
Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Encyclopedia Articles (693 more entries. View all »)
Columbia Electronic EncyclopediaCite This Source


mad cow disease: see prion. 
The Columbia Electronic Encyclopedia Copyright © 2004, Columbia University Press.
Licensed from Columbia University Press




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