split personality

noun

1. multiple personality.

split personality

noun

1. the tendency to change rapidly in mood or temperament
2. See multiple personality
   a nontechnical term for multiple personality

Word History and Origins

Origin of split personality¹

First recorded in 1925–30

Example Sentences

The serum drove him mad, and he developed a split personality.

From Time

The road to Wisconsin’s divisionsWisconsin has had a split personality politically for generations.

From Washington Post

But the Republican Party is suffering from an ideological split personality.

From The Daily Beast

Dana seems to have developed a split personality for her career.

From The Daily Beast

When fandom had its schism, Koot immediately developed a split personality.

From Project Gutenberg

Related Words

• dissociative identity disorder