That night and the next day are 'the maddest, merriest of all the year.'
Remember that you are dealing with the cleverest and maddest brain we know of to-day.
Candidates for State office were forced to make the maddest pledges.
Both of 'em acted like they were mad at each other, but Fairchild seemed to be the maddest.
I vow 'tis the maddest, merriest throng I've seen for many a day.
He is, on the whole, quite the maddest—and perhaps the most despicable—of the lot.
The maddest person in the house that evening was Stella, because she couldn't go, too.
They found the photographer's waiting-room a scene of the maddest confusion.
Stronger proof of the maddest of worlds could not be furnished.
And her songs were the maddest, merriest, she could think of.
late 13c., from Old English gemædde (plural) "out of one's mind" (usually implying also violent excitement), also "foolish, extremely stupid," earlier gemæded "rendered insane," past participle of a lost verb *gemædan "to make insane or foolish," from Proto-Germanic *ga-maid-jan, demonstrative form of *ga-maid-az "changed (for the worse), abnormal" (cf. Old Saxon gimed "foolish," Old High German gimeit "foolish, vain, boastful," Gothic gamaiþs "crippled, wounded," Old Norse meiða "to hurt, maim"), from intensive prefix *ga- + PIE *moito-, past participle of root *mei- "to change" (cf. Latin mutare "to change," mutuus "done in exchange," migrare "to change one's place of residence;" see mutable).
Emerged in Middle English to replace the more usual Old English 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 early 14c., but deplored by Rev. John Witherspoon (1781) as an Americanism. It now competes in American English with angry for this sense. Of animals, "affected with rabies," from late 13c. Phrase mad as a March hare is attested from 1520s, via notion of breeding season; mad as a hatter is from 1829 as "demented," 1837 as "enraged," according to a modern theory supposedly from erratic behavior caused by prolonged exposure to poison mercuric nitrate, used in making felt hats. For mad as a wet hen see hen. Mad money is attested from 1922; mad scientist is from 1891.
late 14c., from mad (adj.).
Suffering from a disorder of the mind; insane.
Affected by rabies; rabid.