Noun: folie a deux (folies a deux) fow'lee-u'deu
- The simultaneous occurrence of symptoms of a mental disorder (as delusions) in two persons who are closely related (as siblings or man and wife)
"The married couple shared the same bizarre beliefs about alien abductions, a classic case of folie a deux"
Derived forms: folies a deux
Type of: disturbance, folie [archaic], mental disorder, mental disturbance, psychological disorder
Encyclopedia: Folie a deux