People who deliberately tell untruths or make false statements; people who do not tell the truth.
From Old English 'leogere,' related to Germanic roots meaning 'to lie.' The word has meant 'one who tells falsehoods' for over a thousand years.
The word 'liar' is so ancient that it appears in some of the oldest English texts, and philosophers have spent centuries on the paradox of 'the liar's statement'—if a liar says 'I always lie,' is that statement true or false?
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