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Capgras delusion
Reference material by Wiktionary contributors. This retains its source identity and is not 411 news reporting.
English
Etymology
After Joseph Capgras (1873-1950), French psychiatrist.
Noun
en psychiatry A delusion in which the sufferer believes that a friend, spouse or family member has been replaced by an identical-looking impostor.
Synonyms
en Capgras syndrome
en eponyms