folie à deux


fo·lie à deux

noun \f-lē-ä-ˈdœ, ˌfä-lē-ˌä-ˈdə(r)\

Definition of FOLIE À DEUX

:  the presence of the same or similar delusional ideas in two persons closely associated with one another

Origin of FOLIE À DEUX

French, literally, double madness
First Known Use: circa 1892

folie à deux

noun \-(ˌ)ä-ˈ̅, -ˈdə\   (Medical Dictionary)
plural folies à deux \ˌfō-ˈlē(z)-(ˌ)ä-\

Medical Definition of FOLIE À DEUX

: the presence of the same or similar delusional ideas in two persons closely associated with one another

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