delusional

delusion +‎ -al

• IPA^(key): /dɪˈluːʒənəl/

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delusional (comparative more delusional, superlative most delusional)

1. Suffering from delusions; having false or faulty beliefs.

   Synonym: deluded

   You're delusional if you think that plan will work.

   • 2009, Robert M. Cossel, Master of the Strings, page 57:

     Morgan could not remember the last time he had heard his first name used, and he had not even been aware that Captain Jackson knew it. Regardless, he could not reply; he was sure he must be delusional. He had lost too much blood […]

2. Being or relating to a delusion.
   • 2009, David M. Semple, Roger Smyth, Oxford Handbook of Psychiatry, page 87:

     Delusional jealousy […] A delusional belief that one's partner is being unfaithful. This can occur as part of a wider psychotic illness, secondary to organic brain damage (e.g. following the 'punch drunk syndrome' in boxers), […]

• delusional disorder
• delusionality
• delusionally
• delusional parasitosis
• undelusional

• delusionary

delusional (plural delusionals)

1. A person suffering from a delusion.
   • 2005, Laura Knight-Jadczyk, The High Strangeness of Dimensions, Densities, and the Process of Alien Abduction:

     But of course, that excludes the narcissistic delusionals, the deliberate frauds, and the pathological cases of multiple personality. They are all out there in New Age Land, and it's a jungle!

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