delusional

American  

[dih-loo-zhuh-nl] / dɪˈlu ʒə nl /

Sometimes delusionary

adjective

1. having false or unrealistic beliefs or opinions.

   Senators who think they will get agreement on a comprehensive tax bill are delusional.

2. 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.

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Etymology

Origin of delusional

First recorded in 1850–60; delusion ( def. ) + -al ¹ ( def. )

Example Sentences

I hope I’m also not delusional enough to think that I have another song that even does half as well as this song.

From The Wall Street Journal

"You really have to be delusional to work in this industry for so many years and still believe it's going to work," Keable told the BBC.

From BBC

Some hungers were delusional, but that didn’t make them any less real.

From Literature

“Those things don’t require a lot of cognitive function, and they can be done even in a delusional state,” he said.

From Los Angeles Times

But they also assume anyone who disagrees with them is incompetent, delusional or even a saboteur, so they reject their opinions and ideas out of hand.

From The Wall Street Journal

Related Words

• unrealistic