거짓말을 하는 사람, 특히 상습적으로 허위 사실을 말하는 사람.
A person who tells lies, especially habitually or professionally.
예문:
"She called him a liar after catching him fabricating the entire story."
"Nobody trusts John anymore because he has a reputation as a notorious liar."
"A pathological liar often cannot distinguish between reality and fiction."