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Synonyms

delirious

American  
[dih-leer-ee-uhs] / dɪˈlɪər i əs /

adjective

  1. Pathology. affected with or characteristic of delirium.

  2. wild with excitement, enthusiasm, etc..

    She was delirious with joy at the news.

    Synonyms:
    ecstatic, excited

delirious British  
/ dɪˈlɪrɪəs /

adjective

  1. affected with delirium

  2. wildly excited, esp with joy or enthusiasm

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms


Etymology

Origin of delirious

First recorded in 1590–1600; deliri(um) + -ous


Explanation

If you're delirious you're uncontrollably excited or a bit crazy, like when you win the lottery and run screaming through the streets, delirious with happiness. While we sometimes like to say, metaphorically, that strong emotions make us delirious, this adjective has more grim origins, in the Latin word for delirium or "madness" — in the medical sense, that is. When you're delirious from a high fever or a serious bump to the head, you might become incoherent, hallucinate, or have disturbing dreams. The story of The Wizard of Oz is based on the delirious dream Dorothy has after she bumps her head during a tornado.

Keep Reading on Vocabulary.com

Vocabulary lists containing delirious

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

I’d happily tag along for more delirious seasons as he searches for answers.

From Salon ● Jun. 13, 2026

From that ordeal came “Deathfugue,” first appearing in 1947 in Romanian translation as “Death Tango,” a title that better suggests its delirious, macabre motion.

From The Wall Street Journal ● Jun. 5, 2026

However, after four successful kicks, there would be no reprieve for Gabriel who fired his penalty over the crossbar and into the delirious PSG fans.

From BBC ● May 30, 2026

The corner is scrambled away to Ryan Giggs, who scuffs a shot goalward and a delirious Sheringham sweeps in, scouting over his shoulder to check the offside while wheeling away celebrating wildly.

From BBC ● May 28, 2026

I told them I’d rather walk, thanks, and backed out of the apartment, smiling, practically delirious, my face burning under the collective gaze of cool, curious solicitude.

From "The Secret History" by Donna Tartt

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