Definition of delusion in English:

delusion

noun

  • 1An idiosyncratic belief or impression that is firmly maintained despite being contradicted by what is generally accepted as reality or rational argument, typically a symptom of mental disorder.

    ‘the delusion of being watched’
    • ‘LSD can induce a psychotic state with paranoid delusions that can last for months.’
    • ‘The rise of psychoanalysis did much to validate the contents of mental symptoms, including delusions.’
    • ‘Narcissism is a noxious mental disease that leads people to grandiose delusions.’
    • ‘The doctors had been aware that he harboured violent delusions.’
    • ‘He was a realistic man who harbored no delusions about immortality.’
    • ‘Psychotic delusions, say of being invincible, are a common element of mania.’
    • ‘Is this for real, or just a delusion on my part?’
    • ‘Many are filled with hate and delusions of superiority; some are actually psychotic.’
    • ‘I think I mentioned somewhere that delusions are visions of realities not yet activated.’
    • ‘Such a grandiose delusion is common to the consideration of an insanity defense.’
    • ‘What did they call it when two people shared a delusion?’
    • ‘Schizophrenia, a biological disorder of the brain, is characterised by delusions, hallucinations and thought disorders.’
    • ‘Is it all a mass delusion, or is there something to it all.’
    • ‘No talk show host or publisher invited them to share their delusions with the world.’
    • ‘In some non-Western cultures, schizophrenic delusions single out the person as spiritually gifted.’
    • ‘In the paranoid form of this disorder, they develop delusions of persecution or personal grandeur.’
    • ‘In other words, this was another sensational example of what sociologists call collective delusions.’
    • ‘He has grandiose delusions and does not want to stay in hospital.’
    • ‘Psychotic patients may have paranoid delusions about their food, leading to reduced intake.’
    misapprehension, mistaken impression, false impression, mistaken belief, misconception, misunderstanding, mistake, error, misinterpretation, misconstruction, misbelief
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    1. 1.1 The action of deluding or the state of being deluded.
      ‘what a capacity television has for delusion’
      • ‘It took me 15 years to realise that it was a tragic, sickly delusion.’
      • ‘In short, the evidence points more towards hoaxing and delusion than real discovery.’
      • ‘What is deceit or delusion, and what is genuine in this movement?’
      • ‘The collapse of idea in Europe may yet be the event that will snap Britain awake from a 30-year delusion.’
      • ‘Now mass delusion is not necessarily a bad thing.’
      • ‘This is one of the first steps he takes towards differentiating between delusion and fact.’
      • ‘The rest of us play along, but no one is fooled by this necessary delusion.’
      • ‘So many of us live in a life of delusion, of separation, of selfishness and of loneliness.’
      deception, misleading, deluding, fooling, tricking, trickery, duping
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Phrases

  • delusions of grandeur

    • A false impression of one's own importance.

      • ‘Thankfully, during week one of the playoffs, it was revealed that all of my friends had fallen prey to similar delusions of grandeur.’
      • ‘The patient entertains delusions of grandeur.’
      • ‘Outing those with delusions of grandeur, paranoia, and entitlement is a tough job, but somebody's done a great job of it.’
      • ‘In his book you'll read about his week in a travel agency, where, on his first day, he was conned into buying birthday lunch for a boss with serious delusions of grandeur.’
      • ‘The purpose of that story was to demonstrate that a well-known and well-respected public figure was actually nothing more than a mindless hack with delusions of grandeur.’
      • ‘It is a pleasingly post-modern twist which Cervantes himself would have enjoyed, having written a book about absurd follies, delusions of grandeur and the deficit between fiction and reality.’
      • ‘You have to guard against delusions of grandeur.’
      • ‘They have managed to negotiate the multi-million pound sale of a player who is not proven at the highest level, seems to lack professionalism and appears to have delusions of grandeur.’
      • ‘I'm not sure what's worse: The naked, unapologetic corruption, or the insane delusions of grandeur.’
      • ‘If you have delusions of grandeur and fancy yourself to be intellectually superior, go on and impress those who are even more challenged than you are.’
      delusions of grandeur, obsessionalism, grandiosity, grandioseness
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Origin

Late Middle English (in the sense ‘act of deluding or of being deluded’): from late Latin delusio(n-), from the verb deludere (see delude).

Pronunciation

delusion

/dəˈlo͞oZHən//dəˈluʒən/