Definition of demented in US English:

demented

adjective

  • 1Suffering from dementia.

    • ‘Less severely demented patients and black and Hispanic patients were more likely to stay in the home.’
    • ‘Polonius insisted that Hamlet had become demented, and cautioned Ophelia to keep her distance.’
    • ‘Until a week ago, he was demented, rigid, incontinent, unable to talk, swallow or blink his eyes.’
    • ‘The diagnosis of an independent depressive disorder becomes difficult in the demented patient.’
    • ‘High level of disability is associated with major depression, in both demented and nondemented people.’
    • ‘Caretakers and physicians often project sensations of hunger and thirst onto severely demented patients with poor oral intake.’
    • ‘Others might view such people as demented or delusional or megalomaniacal.’
    • ‘Health care professionals commonly rely on feeding tubes to supply nutrition to these severely demented patients.’
    • ‘But, it could be a problem with older, demented patients, or those who are unconscious.’
    • ‘Whenever demented patients travel, it is safe to assume their confusion will worsen for the duration of the trip.’
    • ‘At this point you may be asking, why it is important to train a workforce that will be experts in taking care of demented residents.’
    • ‘On the flip side, cognition has improved in demented or impaired people given nutritional support.’
    unbalanced, of unsound mind, mentally ill, deranged, crazed, distracted, troubled, disturbed, unhinged, insane, mad, mad as a hatter, mad as a march hare, raving mad, lunatic, out of one's head, out of one's mind, not in one's right mind, neurotic, psychotic
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    1. 1.1British informal Driven to behave irrationally due to anger, distress, or excitement.
      ‘a demented, dangerous, and sadistic Mafioso’
      • ‘Finally, at the age of 33, the demented fury that drove him on has subsided and other priorities have kicked in.’
      • ‘To me, it seemed like demented torture, and not very flattering.’
      • ‘Not to let one musical style last for long, he soon ditched the guitar, grabbed the mic and started back in with some demented rapping.’
      • ‘Deep set eyes and a long face made him look like a demented scientist.’
      • ‘Conversations may be in whispers or, often, in demented shouting contests.’
      • ‘Then the speakers seem to come alive with demented directional droning.’
      • ‘They hold a twisted allure to the more demented members of any society.’
      • ‘She flailed her limbs and screamed, looking like a poor demented bird.’
      • ‘I looked down and saw that he was eating some demented form of French fries with ketchup squirted all over them.’
      • ‘Reaction to the wreck showed an almost demented optimism about the venture.’
      • ‘To my possibly demented mind there did seem to be something unique, even comical about the framing of the issues.’
      • ‘As Earth orbits the sun, the tubes are lashing through space like water from a demented lawn sprinkler.’
      • ‘It sounds like an orchestra of demented bassoonists playing at full tilt.’
      • ‘Louisa stopped navigating the steps to stare at me while I bounced all around the living room like a demented idiot.’
      • ‘I probably looked more than a little demented, come to think of it.’
      • ‘They fell in the gaily lit hall with a flutter like demented birds attempting flight.’
      • ‘If he lived to 200, he would never understand females, and the demented way their brains worked.’
      • ‘As if drunk, or stoned or demented, I jumble everything up, use wrong words or leave gaps in sentences that trail off to nowhere.’
      mad, insane, deranged, out of one's mind, not in one's right mind, crazed, lunatic, unbalanced, unhinged, unstable, disturbed, distracted, as mad as a hatter, as mad as a march hare, stark mad
      View synonyms

Origin

Mid 17th century: past participle of earlier dement ‘drive mad’, from Old French dementer or late Latin dementare, from demens ‘out of one's mind’.

Pronunciation

demented

/dəˈmɛn(t)əd//dəˈmen(t)əd/