split personality

/splɪt ˈpʌrsnˌælədi/
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Other forms: split personalities

Definitions of split personality
  1. noun
    a relatively rare dissociative disorder in which the usual integrity of the personality breaks down and two or more independent personalities emerge
    synonyms: multiple personality
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    type of:
    dissociative disorder
    dissociation so severe that the usually integrated functions of consciousness and perception of self break down
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