Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • adjective Suffering from dementia.
  • adjective Informal Crazy or foolish.

from The Century Dictionary.

  • Having lost the normal use of the reason; insane; specifically, afflicted with or characterized by dementia.

from the GNU version of the Collaborative International Dictionary of English.

  • adjective Insane; mad; of unsound mind.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • adjective Insane or mentally ill.
  • adjective Suffering from dementia.
  • verb Simple past tense and past participle of dement.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adjective affected with madness or insanity

Etymologies

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Examples

  • The word 'demented' like 'nutter' or 'lunatic' is a real barrier to sufferers, such as myself, in discussing mental illness, and so overcoming the terrible awkwardness that makes us feel like social lepers.

    The Guardian World News Alastair Campbell 2011

  • Your use of the word 'demented' is not totally surprising, given how pervasive and entrenched the mythology about the poet is out there (and how easy it has been for centuries to automatically label gifted, creative women who behave differently as 'demented').

    A reader requests . . . Roger Sutton 2007

  • I swear dr demented is going to drive me insane one of these days …

    Think Progress » Tea Party Movement As Popular As Socialism 2010

  • Too bad dr demented is too dense to understand what you are trying to say to them ..

    Think Progress » Rove Falsely Claims Bush Administration Never Said Iraqi Oil Revenue Would Help Pay For War 2010

  • Mr. Gülen's followers say the real conspirators are instead members of the so-called Deep State — what they call a demented, multitentacled secret alliance of high-level figures in the military, the intelligence services, the judiciary and organized crime.

    A Nation of Conspiracies Claire Berlinski 2010

  • Mr. Gülen's followers say the real conspirators are instead members of the so-called Deep State — what they call a demented, multitentacled secret alliance of high-level figures in the military, the intelligence services, the judiciary and organized crime.

    A Nation of Conspiracies Claire Berlinski 2010

  • Mr. Gülen's followers say the real conspirators are instead members of the so-called Deep State — what they call a demented, multitentacled secret alliance of high-level figures in the military, the intelligence services, the judiciary and organized crime.

    A Nation of Conspiracies Claire Berlinski 2010

  • Mr. Gülen's followers say the real conspirators are instead members of the so-called Deep State — what they call a demented, multitentacled secret alliance of high-level figures in the military, the intelligence services, the judiciary and organized crime.

    A Nation of Conspiracies Claire Berlinski 2010

  • Her curiously juvenile prattle — "The way it began, it was a bit like a repeat of earlier," she begins one anecdote — and her worshipful obsession with all things Hailshamite quickly make it clear that Kathy, if not demented, is at least imperfectly removed from her schoolgirl self; and as she rabbits on, the oddness of her schooldays becomes increasingly apparent.

    New Fiction Joseph O'Neil 2005

  • Her curiously juvenile prattle — "The way it began, it was a bit like a repeat of earlier," she begins one anecdote — and her worshipful obsession with all things Hailshamite quickly make it clear that Kathy, if not demented, is at least imperfectly removed from her schoolgirl self; and as she rabbits on, the oddness of her schooldays becomes increasingly apparent.

    New Fiction Joseph O'Neil 2005

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