English Dictionary

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delusion (dɪˈluːʒən Pronunciation for delusion



  1. a mistaken or misleading opinion, idea, belief, etc   ⇒ he has delusions of grandeur
  2. (psychiatry) a belief held in the face of evidence to the contrary, that is resistant to all reason See also illusion, hallucination
  3. the act of deluding or state of being deluded

Derived Forms

deˈlusional, deˈlusionary adjective
deˈlusive adjective
deˈlusively adverb
deˈlusiveness noun
delusory (dɪˈluːsərɪ Pronunciation for delusory  adjective


View thesaurus entry
= misconception, mistaken idea, misapprehension, fancy, illusion, deception, hallucination, fallacy, self-deception, false impression, phantasm, misbelief

Translations for 'delusion'

  • British English: delusion A delusion is a false idea. NOUNI was under the delusion that he intended to marry me.
  • Brazilian Portuguese: ilusão
  • Chinese: 错觉错錯觉覺
  • European Spanish: ilusión
  • French: illusion
  • German: Irrglaube
  • Italian: illusione
  • Japanese: 錯覚
  • Korean: 착각
  • Portuguese: ilusão
  • Spanish: ilusión

Example Sentences Including 'delusion'

Elevating marketing to this level of importance is a snare and a delusion ; it confuses form and image with substance and reality.
I think you go around with the insane delusion that people like you.
Globe and Mail (2003)
It relies on magical thinking for its allure and is in reality a snare and a delusion.
The Australian (2004)
Many sensed the species ' possibilities within themselves, and whether this was delusion or revelation was impossible to tell.
Zindell, David The Broken God
The fact that you thought he was absent was your nightmare, your cross, but it was a delusion.
Howatch, Susan Ultimate Prizes
The sceptic could say that what everyone is granted is the capacity to be enthralled by their own delusion.
Montefiore, Jan Feminism and Poetry
You'll say I was imagining it, hallucinating, my subconscious was playing tricks, a neurotic delusion... I'm not going to argue with you.
Stewart, Michael Grace


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