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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.


Etymology

Origin of pathological liar

First recorded in 1890–95

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Here’s a pathological liar who speaks falsely about practically everything.

From Los Angeles Times • Nov. 3, 2024

He is a pathological liar, with clear authoritarian instincts.

From Slate • Dec. 20, 2023

Hart said that he does not believe it is likely that Santos will become more honest, and that the lawmaker appears to be a pathological liar.

From Seattle Times • Jan. 30, 2023

"He's a pathological liar," Parsa told the Beast.

From Salon • Dec. 1, 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