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Definition of illusion:

  1. A plain, delicate lace, usually of silk, used for veils, scarfs, dresses, etc.
  2. A sensation originated by some external object, but so modified as in any way to lead to an erroneous perception; as when the rolling of a wagon is mistaken for thunder.
  3. An unreal image presented to the bodily or mental vision; a deceptive appearance; a false show; mockery; hallucination.
  4. Hence: Anything agreeably fascinating and charning; enchantment; witchery; glamour.


misrepresentation, reverie, castle in the air, deceit, prank, trick, conjury, dissembling, fiction, vision, pipe dream, fantasy, gloss, false impression, head game, likeness, semblance, real, whoremaster, colour, ignis fatuus, deception, put-on, bubble, figment, antic, fast one, whoremonger, image, make-believe, delusion, fondness, dream, partiality, conjuring, conjuring trick, fallacy, confusion, color, misunderstanding, caper, legerdemain, daydream, phantasy, fancy, incantation, john, error, rainbow, magic, phantasma, mistake, joke, hallucination, thaumaturgy, psychotic belief, dissimulation, mirage, magic trick, conjuration, invocation.

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