demented

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de·ment·ed

(dĭ-mĕn′tĭd)

adj.

1. Suffering from dementia.

2. Informal Crazy or foolish.

de·ment′ed·ly adv.

de·ment′ed·ness n.

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

demented

(dɪˈmɛntɪd)

adj

(Psychiatry) mad; insane

deˈmentedly adv

deˈmentedness n

Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

de•ment•ed

(dɪˈmɛn tɪd)

adj.

1. crazy; insane; mad.

2. affected with dementia.

[1635–45]

de•ment′ed•ly, adv.

de•ment′ed•ness, n.

ThesaurusAntonymsRelated WordsSynonymsLegend:

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Adj.

demented - affected with madness or insanity; "a man who had gone mad"

brainsick, crazy, unhinged, unbalanced, mad, sick, disturbed

insane - afflicted with or characteristic of mental derangement; "was declared insane"; "insane laughter"

demented

adjective mad, crazy, foolish, daft (informal), frenzied, distraught, manic, insane, crazed, lunatic, unbalanced, deranged, idiotic, unhinged, dotty (slang, chiefly Brit.), loopy (informal), crackpot (informal), out to lunch (informal), barking mad (slang), barking (slang), maniacal, gonzo (slang), doolally (slang), off your trolley (slang), up the pole (informal), non compos mentis (Latin), not the full shilling (informal), crackbrained, wacko or whacko (slang) Her warnings were dismissed as the ramblings of a demented old woman.
sane, sound, normal, reasonable, sensible, rational, all there (informal), lucid, compos mentis (Latin), in your right mind

Collins Thesaurus of the English Language – Complete and Unabridged 2nd Edition. 2002 © HarperCollins Publishers 1995, 2002

demented

adjective

Afflicted with or exhibiting irrationality and mental unsoundness:

brainsick, crazy, daft, disordered, distraught, dotty, insane, lunatic, mad, maniac, maniacal, mentally ill, moonstruck, off, touched, unbalanced, unsound, wrong.

Informal: bonkers, cracked, daffy, gaga, loony.

Slang: bananas, batty, buggy, cuckoo, fruity, loco, nuts, nutty, screwy, wacky.

Chiefly British: crackers.

Law: non compos mentis.

Idioms: around the bend, crazy as a loon, mad as a hatter, not all there, nutty as a fruitcake, off one's head, off one's rocker, of unsound mind, out of one's mind, sick in the head, stark raving mad.

Translations

dementní

dement

dementoitunuthullu

dément

demente

demented

[dɪˈmentɪd] ADJ → demente (fig) → loco

Collins Spanish Dictionary - Complete and Unabridged 8th Edition 2005 © William Collins Sons & Co. Ltd. 1971, 1988 © HarperCollins Publishers 1992, 1993, 1996, 1997, 2000, 2003, 2005

demented

[dɪˈmɛntɪd] adj

(= mentally ill) [person] → dément(e)

(= crazy) [person, laughter] → fou(folle)

Collins English/French Electronic Resource. © HarperCollins Publishers 2005

demented

adj → verrückt, wahnsinnig; demented with worry → verrückt vor Angst

Collins German Dictionary – Complete and Unabridged 7th Edition 2005. © William Collins Sons & Co. Ltd. 1980 © HarperCollins Publishers 1991, 1997, 1999, 2004, 2005, 2007

demented

[dɪˈmɛntɪd] adj → folle, demente

Collins Italian Dictionary 1st Edition © HarperCollins Publishers 1995

de·ment·ed

a. demente, enajenado-a; que sufre de demencia.

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References in classic literature ?

The only fear they entertain of attack is from the green Martians or some demented red man, as all Barsoomians realize that the very existence of every form of life of Mars is dependent upon the uninterrupted working of this plant.

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Scarcely were we clear when the foremast dropped down on the fastenings, dashing the jib-boom into the water with its load of demented human beings.

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The meagre but sufficient identification of the deceased; the impudent candor of confession; the brutal anathema; the ludicrous change of sex and sentiment--all marked this record as the work of one who must have been at least as much demented as bereaved.

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He rose and, putting his hand on my shoulder, laughed like one demented as he said:

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Then the great bulls in the center of the arena felt the mighty fangs of their demented fellow, and with one accord they melted into the black shadows of the overhanging forest.

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"He acts as if he were demented with delight at being rescued," Mrs.

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But the whole effect is spoiled when I look at them - at Tetralani, five feet ten in her stocking feet and weighing a hundred and ninety pounds, and at Barillo, a scant five feet four, greasy-featured, with the chest of a squat, undersized blacksmith, and at the pair of them, attitudinizing, clasping their breasts, flinging their arms in the air like demented creatures in an asylum; and when I am expected to accept all this as the faithful illusion of a love-scene between a slender and beautiful princess and a handsome, romantic, young prince - why, I can't accept it, that's all.

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Every living creature there held life as of no account, and was demented with a passionate readiness to sacrifice it.

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At this, Mrs Boffin fairly screamed with rapture, and sat beating her feet upon the floor, clapping her hands, and bobbing herself backwards and forwards, like a demented member of some Mandarin's family.

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His eyes staring at nothing, his mouth open and frothing, and breathing as one in a cold bath, he went forward demented, while Dan toiled after him.

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The lake there is eight feet deep, and you can imagine our feelings when we saw that the trail of the poor demented girl came to an end at the edge of it.

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George, who has been looking first at one of them and then at the other, as if he were demented, takes his venerable acquaintance by the throat on receiving this request, and dragging him upright in his chalr as easily as if he were a doll, appears in two minds whether or no to shake all future power of cushioning out of him and shake him into his grave.