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’
    • ‘LSD can induce a psychotic state with paranoid delusions that can last for months.’
    • ‘He was a realistic man who harbored no delusions about immortality.’
    • ‘Psychotic delusions, say of being invincible, are a common element of mania.’
    • ‘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.’
    • ‘Such a grandiose delusion is common to the consideration of an insanity defense.’
    • ‘In some non-Western cultures, schizophrenic delusions single out the person as spiritually gifted.’
    • ‘Is this for real, or just a delusion on my part?’
    • ‘Many are filled with hate and delusions of superiority; some are actually psychotic.’
    • ‘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.’
    • ‘What did they call it when two people shared a delusion?’
    • ‘In other words, this was another sensational example of what sociologists call collective delusions.’
    • ‘Narcissism is a noxious mental disease that leads people to grandiose delusions.’
    • ‘No talk show host or publisher invited them to share their delusions with the world.’
    • ‘I think I mentioned somewhere that delusions are visions of realities not yet activated.’
    • ‘The rise of psychoanalysis did much to validate the contents of mental symptoms, including delusions.’
    • ‘The doctors had been aware that he harboured violent delusions.’
    • ‘In the paranoid form of this disorder, they develop delusions of persecution or personal grandeur.’
    misapprehension, mistaken impression, false impression, mistaken belief, misconception, misunderstanding, mistake, error, misinterpretation, misconstruction, misbelief
    View synonyms
    1. 1.1[mass noun] The action of deluding or the state of being deluded:
      ‘what a capacity television has for delusion’
      • ‘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.’
      • ‘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 collapse of idea in Europe may yet be the event that will snap Britain awake from a 30-year delusion.’
      • ‘What is deceit or delusion, and what is genuine in this movement?’
      • ‘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.’
      deception, misleading, deluding, fooling, tricking, trickery, duping
      View synonyms

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/