delusional

[dih-loo-zhuh-nl]

SEE MORE SYNONYMS FOR delusional ON THESAURUS.COM

adjective

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.

Nearby words

Sometimes de·lu·sion·ar·y.

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for delusional

At one point they even told her she was delusional, despite her diffuse ulcerating lesions.
Why Your Doctor Feels Like a 'Beaten Dog'|Daniela Drake|September 11, 2014|DAILY BEAST
I suppose you can if you were dumb and delusional enough to think that the Emmy voters might liven things up a little bit.
The Biggest Emmys Snubs and Surprises: 'Modern Family,' McConaughey, and More|Kevin Fallon|August 26, 2014|DAILY BEAST
But according expert opinion and the case details released to the public, she was also floridly psychotic and delusional.
Postpartum Stigma: Why My Patient Committed Suicide|Jean Kim|August 5, 2014|DAILY BEAST
Burke insists that he is not nostalgic and he is not delusional.
James Lee Burke Talks About His Fiction, History, and the American Dream|David Masciotra|July 20, 2014|DAILY BEAST

And delusional thinking can lead to irrational, dangerous behavior.
One Breakdown Can Mean Losing Your Kid Forever|ProPublica|May 30, 2014|DAILY BEAST
He was delusional on religious subjects and thought the attendants were doing wrong.
The Autobiography of a Thief|Hutchins Hapgood
In this study Freud shows out of what infantile forms of thought and instincts the delusional system was built up.
Collected Papers on Analytical Psychology|C. G. Jung
But in many cases of delusional insanity the cause is hidden; neither pulse nor other medical test betrays it.
Moral Principles and Medical Practice|Charles Coppens
On his transfer to our Hospital he readily carries over his delusional ideas to the officials here.
Studies in Forensic Psychiatry|Bernard Glueck
Hence we may suspect that moral insanity is likely to bring on delusional insanity, and vice versa.
Moral Principles and Medical Practice|Charles Coppens