Definition of Mad

1. Adjective. Roused to anger. "Sore over a remark"

Exact synonyms: Huffy, Sore
Language type: Colloquialism
Similar to: Angry
Derivative terms: Huff, Huffiness, Madness, Soreness

2. Adjective. Affected with madness or insanity. "A man who had gone mad"
Exact synonyms: Brainsick, Crazy, Demented, Disturbed, Sick, Unbalanced, Unhinged
Similar to: Insane
Derivative terms: Craze, Craziness, Dementedness, Madness, Sick

3. Adjective. Marked by uncontrolled excitement or emotion. "A mad whirl of pleasure"
Exact synonyms: Delirious, Excited, Frantic, Unrestrained
Similar to: Wild
Derivative terms: Delirium, Madness

4. Adjective. Very foolish. "A completely mad scheme to build a bridge between two mountains"
Exact synonyms: Harebrained, Insane
Similar to: Foolish
Derivative terms: Madness

Definition of Mad

1. a. Disordered in intellect; crazy; insane.

2. v. t. To make mad or furious; to madden.

3. v. i. To be mad; to go mad; to rave. See Madding.

4. n. An earthworm.

Definition of Mad

1. Acronym. mutually assured destruction ¹

2. Acronym. magnetic anomaly detector ¹

3. Adjective. Insane; crazy, mentally deranged. ¹

4. Adjective. (chiefly US; UK dated + regional) Angry, annoyed. ¹

5. Adjective. Wildly confused or excited. ¹

6. Adjective. Extremely foolish or unwise; irrational; imprudent. ¹

7. Adjective. (colloquial usually with ''for'' or ''about'') Extremely enthusiastic about; crazy about; infatuated with; overcome with desire for. ¹

8. Adjective. (context: of animals) abnormally ferocious or furious; or, rabid, affected with rabies. ¹

9. Adjective. (slang chiefly Northeastern US) Intensifier, signifies an abundance or high quality of a thing; very, much or many. ¹

10. Adverb. (slang chiefly Northeastern US) Intensifier; to a large degree; extremely; exceedingly; very; unbelievably. ¹

11. Verb. (context: now colloquial US) To madden, to anger, to frustrate. ¹

¹ Source:

Definition of Mad

1. insane [v MADDED, MADDING, MADS] - See also: insane

Medical Definition of Mad

1. 1. A slattern. 2. The name of a female fairy, especially. The queen of the fairies; and hence, sometimes, any fairy. Origin: Cf. W. Mad a male child, a boy. 1. Disordered in intellect; crazy; insane. "I have heard my grandsire say full oft, Extremity of griefs would make men mad." (Shak) 2. 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." (Jer. 1. 88) "And being exceedingly mad against them, I persecuted them even unto strange cities." (Acts xxvi. 11) 3. 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." (Franklin) "The mad promise of Cleon was fulfilled." (Jowett (Thucyd)) 4. Extravagant; immoderate. "Be mad and merry." "Fetching mad bounds." . 5. Furious with rage, terror, or disease; said of the lower animals; as, a mad bull; especially, having hydrophobia; rabid; as, a mad dog. 6. Angry; out of patience; vexed; as, to get mad at a person. 7. Having impaired polarity; applied to a compass needle. Like mad, like a mad person; in a furious manner; as, to run like mad. To run mad. To become wild with excitement. To run wildly about under the influence of hydrophobia; to become affected with hydrophobia. To run mad after, to pursue under the influence of infatuation or immoderate desire. "The world is running mad after farce." . Origin: AS. Gemd, gemad, mad; akin to OS. Gemd foolish, OHG. Gameit, Icel. Meia to hurt, Goth. Gamaids weak, broken. An earthworm. Alternative forms: made. Origin: AS. Maa; akin to D. & G. Made, Goth. Mapa, and prob. To E. Moth. Source: Websters Dictionary (01 Mar 1998)

Mad Pictures

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Lexicographical Neighbors of Mad

mad (current term)
mad-dog skullcap
mad-dog weed
mad apple
mad as a March hare
mad as a cut snake
mad as a fish
mad as a hatter
mad cow
mad dogs and Englishmen
mad for it
mad hatter

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