delusional

Sometimes de·lusion·ary

[dih-loo-zhuh-nl]

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.

Word History and Origins

Origin of delusional¹

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

Example Sentences

Donny is certainly demented, but he’s not nearly delusional enough that he didn’t recognize the single most ham-handed posterior puckering since “this Nobel award” was ever talked about.

From Salon

How can there be when you have to pay fealty to a delusional dim-wit with the power of a president?

From Salon

The junta would be "delusional" to think that an election held under the current circumstances will be considered "remotely credible", Human Rights Watch told the BBC earlier this year.

From BBC

Findlay, now Scottish Tory leader, said: "Frankly, Nicola Sturgeon must be delusional if she thinks the women of Scotland will swallow this drivel."

From BBC

The president is not delusional in this view; the Supreme Court’s conservative majority has basically given him that power.

From Salon

Related Words

• unrealistic