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Cognomen Liar (Dia , Lier , Liar ) , globally, is a widespread surname. The last name Liar is habitual in Senegal, where it is a common surname, Mauritania, and Lebanon, where it is quite a common surname (explore the name in all countries). In absolute terms, it is commonest in Senegal, Indonesia, and Algeria. Much less frequently, Liar is the forename as well as the last name.