pathological liar

[ path-uh-loj-i-kuhl lahy-er ]

noun

1. a person who tells lies frequently, with no rational motive for doing so.

Word History and Origins

Origin of pathological liar¹

First recorded in 1890–95

Example Sentences

It goes to show you what type of pathological liars they are.

From Washington Post

Relin could not have imagined that this was a man who would later be called a pathological liar.

From The Daily Beast

So is the defendant a delusional person with a mental problem or just one damn good pathological liar?

From The Daily Beast

The other was all that, plus a narcissistic pathological liar who easily wove fanciful, elaborate tales.

From The Daily Beast

Reality-TV blogger Andy Dehnart called her a "pathological liar."

From The Daily Beast

Nowhere is this better illustrated than in the pathological liar.

From Project Gutenberg