a statement made by somebody knowing that it is not trueto tell a lieThe whole story is nothing but a pack of lies.a barefaced lie (= a lie that is deliberate and shocking) see also white lieIdioms
give the lie to something
(formal) to show that something is not trueThese new figures give the lie to the belief that unemployment is going down.I tell a lie
(British English, informal) used to say that something you have just said is not true or correctWe first met in 2006, no, I tell a lie, it was 2007. more at live a lie at live1, a tissue of lies at tissue