folie à deux

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English[edit]

English Wikipedia has an article on:
Wikipedia

Alternative forms[edit]

Etymology[edit]

Borrowed from French folie à deux (madness for/of two [people]).

Pronunciation[edit]

  • IPA(key): /ˈfɒli ə ˈdɜː/

Noun[edit]

folie à deux (plural folies à deux)

  1. A situation in which two people behave abnormally together in a way that neither of them would on their own.
  2. (psychiatry, strictly) A rare syndrome in which a symptom of psychosis (particularly a paranoid or delusional belief) is transmitted from one person to another.

Related terms[edit]