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Definition of 'delusion'


  1. (psychology) an erroneous belief that is held in the face of evidence to the contrary
       Synonyms: psychotic belief
  2. a mistaken or unfounded opinion or idea; "he has delusions of competence"; "his dreams of vast wealth are a hallucination"
       Synonyms: hallucination
  3. the act of deluding; deception by creating illusory ideas
       Synonyms: illusion head game

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