Definition of delusion in English:

delusion

noun

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

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

Phrases

  • delusions of grandeur

    • A false impression of one's own importance.

      • ‘The patient entertains delusions of grandeur.’
      • ‘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.’
      • ‘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.’
      • ‘Thankfully, during week one of the playoffs, it was revealed that all of my friends had fallen prey to similar 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.’
      • ‘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.’
      • ‘You have to guard against 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.’
      • ‘Outing those with delusions of grandeur, paranoia, and entitlement is a tough job, but somebody's done a great job of it.’
      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

/dɪˈluːʒ(ə)n/