Delusional

//dɪˈluːʒənəl// adj, noun

Definitions

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

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

  2. 2
    Being, in the form of, or relating to, a delusion.

    "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), […]"

Adjective
  1. 1
    suffering from or characterized by delusions wordnet
Noun
  1. 1
    A person suffering from a delusion.

    "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!"

Etymology

Etymology 1

From delusion + -al.

Etymology 2

From delusion + -al.

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