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A blatantly obvious and/or impudent untruth, one in which the liar does not attempt to disguise their mendacity. Our son tells us nothing but bald-faced lies when we ask him where he goes at night.
See also: lie
One who tells blatantly obvious and/or impudent untruths easily and with little or no attempt to disguise the lie. Everyone knows he is just a bald-faced liar. It's a wonder anyone believes a thing he says anymore.
See also: liar