Толковый словарь английского языка Oxford English Reference - mad

adj. & v. --adj. (madder, maddest) 1 insane; having a disordered mind. 2 (of a person, conduct, or an idea) wildly foolish. 3 (often foll. by about, on) wildly excited or infatuated (mad about football; is chess-mad). 4 colloq. angry. 5 (of an animal) rabid. 6 wildly light-hearted. --v. (madded, madding) 1 tr. US make angry. 2 intr. archaic be mad; act madly (the madding crowd). Phrases and idioms like mad colloq. with great energy, intensity, or enthusiasm. mad keen colloq. extremely eager. Derivatives madness n. Etymology: OE gem{aelig}ded part. form f. gemad mad