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Definition of delusion:

  1. That which is falsely or delusively believed or propagated; false belief; error in belief.
  2. The act of deluding; deception; a misleading of the mind.
  3. The state of being deluded or misled.


lie, hallucination, fallacy, trick, cunning, error, thaumaturgy, fancy, conjuring trick, finesse, head game, misconception, real, deception, phantasy, mistake, guile, hypocrisy, psychotic belief, fraud, illusion, fantasy, magic, prevarication, ignis fatuus, legerdemain, semblance, imposition, double-dealing, craft, phantasma, phantasm, mirage, lying, conjuration, deceitfulness, untruth, dissimulation, fabrication, magic trick, misapprehension, trickery.

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