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folie

American  
[faw-lee] / fɔˈli /

noun

French.

plural

folies
  1. madness; insanity.


Etymology

Origin of folie

First recorded in 1795–1805

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.

Still, Big and Little Edie are not so far gone in their folie à deux that they are unaware of the Maysles brothers’ presence, and they even interact with the filmmakers at times.

From New York Times • Sep. 30, 2022

At times, they seemed to imply that it was a sort of mass folie à deux—a shared delusion.

From The New Yorker • Sep. 3, 2019

In psychiatry there is a condition known as folie à deux, which describes how two people share a psychosis.

From Salon • Jun. 21, 2019

Some have suggested their relationship was a classic folie a deux, a shared psychosis in which a delusional belief is transferred from one person to another.

From BBC • May 16, 2017

Whenever he gets very much disturbed over business matters, as is likely to happen in panic times, he develops a very striking folie du doute, or doubting mania.

From Religion And Health by Walsh, James J. (James Joseph)