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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.

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

They also costarred in a late-1990s story arc on the primetime medical soap “ER” in which she played a pathological liar faking her way as a doctor and was fixated on Edwards’ Dr. Mark Greene.

From Los Angeles Times • Feb. 24, 2022

A pathological liar with megalomania and persecutory delusion.

From New York Times • Aug. 25, 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