Meaning of “liar” in the English Dictionary

british dictionary

"liar" in British English

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liarnoun [ C ]

uk /ˈlaɪ.ər/ us /ˈlaɪ.ɚ/

B2 someone who tells lies:

He's such a liar - you can't trust a word he says.
[ as form of address ] You liar - I never touched it!

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(Definition of “liar” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"liar" in American English

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liarnoun [ C ]

us /ˈlɑɪ·ər/

a person who has just told a lie or who regularly lies

(Definition of “liar” from the Cambridge Academic Content Dictionary © Cambridge University Press)