pathological liar

American  

[path-uh-loj-i-kuhl lahy-er] / ˈpæθ əˌlɒdʒ ɪ kəl ˈlaɪ ər /

noun

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

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Etymology

Origin of pathological liar

First recorded in 1890–95

Example Sentences

Yes, I’m biased against anyone who’s that uncivil, especially when he disrespects facts or — worse — is a pathological liar.

From Los Angeles Times • Jan. 10, 2025

He has most certainly shown himself to be a megalomaniac, a fabulist, a malignant narcissist, and a pathological liar.

From Salon • Sep. 20, 2023

Osborne is asking the judge to consider a supplemental report from a psychologist that disagrees with prosecution experts who testified at Osborne’s original sentencing that he is a dangerous and pathological liar with no remorse.

From Seattle Times • May 22, 2023

“He was abundantly declared a pathological liar, and I don’t like that,” Mr. Jackson said.

From New York Times • Jul. 7, 2022

The only thing you have for measuring what’s real is your mind...so what happens when your mind becomes a pathological liar?

From "Challenger Deep" by Neal Shusterman