split personality

See more synonyms for split personality on Thesaurus.com

Origin of split personality

First recorded in 1925–30
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for split personality

split personality

noun
  1. the tendency to change rapidly in mood or temperament
  2. a nontechnical term for multiple personality
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

split personality in Medicine

split personality

n.
  1. Multiple personality. No longer in scientific use.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.