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appersonation

American  
[a-pur-suh-ney-shuhn, uh-pur-] / æˌpɜr səˈneɪ ʃən, əˌpɜr- /
Also appersonification

noun

Psychiatry.
  1. the unconscious assumption of the personality characteristics of another, usually well known, person.


Etymology

Origin of appersonation

1930–35; ap- 1 + personation ( def. ), modeled on German Appersonierung