folie a deux

[ad_1] noun, plural fo·lies à deux [fo-leez uh doo; French faw-lee za dœ] /fɒˈliz ə ˈdu; French fɔ li za ˈdœ/. Psychiatry.

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

noun

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

n.

1. A condition in which symptoms of a mental disorder occur simultaneously in two individuals who share a close relationship or association.

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