[ dih-loo-zhuh-nl ]
/ dɪˈlu ʒə nl /
having false or unrealistic beliefs or opinions: Senators who think they will get agreement on a comprehensive tax bill are delusional.
Psychiatry. maintaining fixed false beliefs even when confronted with facts, usually as a result of mental illness: He was so delusional and paranoid that he thought everybody was conspiring against him.
Definition for delusionary (2 of 2)
[ dih-loo-zhuhn ]
/ dɪˈlu ʒən /
Origin of delusion
Related formsde·lu·sion·al, de·lu·sion·ar·y, adjectivepre·de·lu·sion, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for delusionary
/ (dɪˈluːʒən) /
delusional, adjectivedelusive, adjectivedelusively, adverbdelusiveness, noun
delusory (dɪˈluːsərɪ), adjective
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Medicine definitions for delusionary
[ dĭ-lōō′zhən ]
A false belief strongly held in spite of invalidating evidence, especially as a symptom of mental illness.
Related formsde•lu′sion•al adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Science definitions for delusionary
[ dĭ-lōō′zhən ]
A false belief or perception strongly held in spite of invalidating evidence, especially as a symptom of mental illness, as in schizophrenia.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Culture definitions for delusionary
A false belief held despite strong evidence against it; self-deception. Delusions are common in some forms of psychosis. Because of his delusions, the literary character Don Quixote attacks a windmill, thinking it is a giant.
The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.