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

See also: delude, delusional

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

Encyclopedia: Delusion

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