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

Unlike Reesa Teesa, whose multi-post tale of marriage to a pathological liar went viral on TikTok last year and led to a TV adaptation, Hilty hasn’t become a universal figure of sympathy and courage.

From Los Angeles Times

He said he regarded Martinez as a “pathological liar,” and one of the most manipulative people he’d met in his long career.

From Los Angeles Times

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

She decided he was a pathological liar.

From Los Angeles Times

He's already a convicted felon, a fraudster, a sexual assaulter, a proven pathological liar who stole classified documents and refused to give them back so it's hard to imagine what that might be.

From Salon