noun (n)

• (psychology) an erroneous belief that is held in the face of evidence to the contrary

  (psikologi) sebuah keliru keyakinan itu diadakan di wajah bukti sebaliknya

  Synonym:
  psychotic belief
  

  source: wordnet30
• a mistaken or unfounded opinion or idea

  yang salah atau tak berdasar pendapat atau ide

  Example:
  He has delusions of competence.
  

  Synonym:
  hallucination
  

  source: wordnet30
• the act of deluding; deception by creating illusory ideas

  tindakan deluding; penipuan dengan membuat ilusi ide

  Synonym:
  head game, illusion
  

  source: wordnet30
• The act of deluding; deception; a misleading of the mind.

  tindakan deluding; penipuan; yang menyesatkan pikiran.

  source: webster1913