Lying definition : the telling of lies , or false statements; untruthfulness.. See examples of LYING used in a sentence. LIE definition : 1. to be in or move into a horizontal position on a surface: 2. If something lies in a particular…. Learn more. 2 meanings : → the present participle and gerund of lie1 → the present participle and gerund of lie2.... Click for more definitions. Lying is the present participle of lie, meaning to tell an untruth or to be disposed to untruth. Find synonyms, translations, and examples of lying in different contexts and languages.