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Folie a Deux - 2 dictionary results

fo⋅lie à deux

[fo-lee uh doo; Fr. faw-lee a dœ]
–noun, plural fo⋅lies à deux [fo-leez uh doo; Fr. faw-lee za dœ] . Psychiatry.
the sharing of delusional ideas by two people who are closely associated.

Origin:
1890–95; < F
fo·lie à deux   (fô-lē' ä dɶ', fŏl'ē)   
n.  A condition in which symptoms of a mental disorder, such as the same delusional beliefs or ideas, occur simultaneously in two individuals who share a close relationship or association.

[French : folie, madness + à, between + deux, two.]
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