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folie à deux

American  
[fo-lee uh doo, faw-lee a ] / fɒˈli ə ˈdu, fɔ li a ˈdœ /

noun

Psychiatry.

plural

folies à deux
  1. the sharing of delusional ideas by two people who are closely associated.


folie à deux British  
/ ˈfɒlɪ æ ˈdɜː /

noun

  1. psychiatry mental illness occurring simultaneously in two intimately related persons who share some of the elements of the illness, such as delusions

"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

Etymology

Origin of folie à deux

Borrowed into English from French around 1890–95

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.

He also appeared on the big screen as Griphook, a goblin employed at the Gringotts Wizarding Bank, but that role will now be played for TV by Leigh Gill, who starred as Gary Puddles in Joker and its sequel, Joker: Folie à Deux.

From BBC

More recently, films focused on other DC characters such as 2023’s “Shazam! Fury of the Gods,” “The Flash” and last year’s “Joker: Folie à Deux” struggled at the box office.

From Los Angeles Times

Films such as 2023’s “Shazam! Fury of the Gods,” “The Flash” and last year’s “Joker: Folie à Deux” struggled at the box office.

From Los Angeles Times

In October, the Burbank studio’s highly anticipated “Joker: Folie à Deux” was a dud, falling far short of expectations despite a reported budget of at least $190 million before marketing.

From Los Angeles Times

The tour will hit only major cities, and at the moment, there are no Los Angeles shows on the docket — perhaps because the “Joker: Folie à Deux” actor is already playing two headliner dates in April at the Coachella Valley Music and Arts Festival in Indio.

From Los Angeles Times