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

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

My pathological liar character can’t hold a candle to you!

From Los Angeles Times • Jan. 24, 2023

A pathological liar with megalomania and persecutory delusion.

From New York Times • Aug. 25, 2021

That doesn’t mean he’s going to be a pathological liar as an adult, but in the meantime, don’t get complacent.

From Slate • Jul. 16, 2021

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