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Noun: delusion  di'loo-zhun
  1. (psychology) an erroneous belief that is held in the face of evidence to the contrary
    - psychotic belief
  2. A mistaken or unfounded opinion or idea
    "he has delusions of competence";
    - hallucination
  3. The act of deluding; deception by creating illusory ideas
    - illusion, head game

Derived forms: delusions

Type of: deceit, deception, dissembling, dissimulation, mental condition, mental state, misconception, psychological condition, psychological state

Encyclopedia: Delusion