English Explanatory Dictionary

mad

English dictionary entry

Meanings

adj
  1. Insane; crazy, mentally deranged.
  2. Angry, annoyed.
  3. Used litotically to indicate satisfaction or approval.
  4. Bizarre; incredible.
  5. Wildly confused or excited.
  6. Extremely foolish or unwise; irrational; imprudent.
  7. Extremely enthusiastic about; crazy about; infatuated with; overcome with desire for.
  8. Abnormally ferocious or furious; or, rabid, affected with rabies.
  9. Intensifier, signifying abundance or high quality of a thing; very, much or many.
  10. Having impaired polarity.
adv
  1. Intensifier; to a large degree; extremely; exceedingly; very; unbelievably.
verb
  1. To be or become mad.
  2. To madden, to anger, to frustrate.
noun
  1. Initialism of mutual assured destruction or mutually assured destruction.
  2. Initialism of magnetic anomaly detector.
  3. Initialism of mothers against decapentaplegic.
  4. Acronym of magnetically-arrested disc, a type of black hole accretion disc).
  5. Initialism of mandibular advancement device.
name
  1. Acronym of Michigan algorithm decoder, a programming language, a variant of ALGOL, developed in 1959 at the University of Michigan.
noun
  1. Acronym of mothers against decapentaplegic.

Pronunciation

/ˈmæd/ /ˈmæːd/ /ˈmɛəd/ en-us-mad.ogg

Word forms

mad madder maddest mads madding madded

Etymology

From Middle English mad, madde, madd, medd, from Old English ġemǣd, ġemǣded (“enraged”), past participle of ġemǣdan, *mǣdan (“to make insane or foolish”), from Proto-Germanic *maidijaną (“to change; damage; cripple; injure; make mad”), from Proto-Germanic *maidaz ("weak; crippled"; compare Old English gemād (“silly, mad”), Old High German gimeit (“foolish, crazy”), literary German gemeit (“mad, insane”), Gothic 𐌲𐌰𐌼𐌰𐌹𐌸𐍃 (gamaiþs, “crippled”)), from Proto-Indo-European *mey- ("to change"; compare Old Irish máel (“bald, dull”), Old Lithuanian ap-maitinti (“to wound”), Sanskrit मेथति (méthati, “he hurts, comes to blows”)).

Synonyms

mighty kinda hella helluv wicked

Derived words

all over the place like a mad woman's custard as mad as a cut snake barking mad bemad big mad boiling mad drive someone mad flaming mad get glad in the same britches one got mad in get glad in the same pants one got mad in hoes mad hopping mad horn-mad like hey-go-mad like mad little mad mad-apple mad as a bear with a sore head mad as a box of frogs mad as a brush mad as a cut snake mad as a fish mad as a hatter mad hatter mad as a hornet mad as a March hare mad as a meat axe mad as a mongoose mad as a wet hen mad as cut snakes mad as hops madbrain madbrained mad-cap madcap Madchester mad cow mad cow disease madden madding maddish maddle mad-doctor mad dog mad-dog mad dogs and Englishmen mad-dog skullcap mad enough to chew nails mad for it mad hatter disease mad hatter syndrome madhead mad honey madhouse mad itch Mad King George mad lad Mad Lib madling madly
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