multiple personality disorder
noun/ˌmʌltɪpl ˌpɜːsəˈnæləti dɪsɔːdə(r)/
/ˌmʌltɪpl ˌpɜːrsəˈnæləti dɪsɔːrdər/
(also less frequent split personality disorder)
(old-fashioned, psychology)- an old term for dissociative identity disorder
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multiple personality disorder