Dictionary

split personality

noun

: a condition in which a person behaves in two very different ways at different times

Full Definition of SPLIT PERSONALITY

1
a :  schizophrenia —not used technically
b :  multiple personality disorder —not used technically
2
:  a dual nature or character <a city with a split personality>

First Known Use of SPLIT PERSONALITY

1919

split personality

noun    (Medical Dictionary)

Medical Definition of SPLIT PERSONALITY

1
:  schizophrenia—not used technically
2
:  multiple personality disorder—not used technically

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