The Oxford Thesaurus An A-Z Dictionary of Synonyms - lying n.

1) prevarication, fibbing, mendacity, mendaciousness, falsification, untruthfulness, perjury; dishonesty, deceit, duplicity: She was accused of lying while under oath. --adj. 2) untruthful, false, mendacious, hypocritical, dishonest, deceitful, deceptive, duplicitous, treacherous, perfidious: Whoever told you they had found the solution is a lying scoundrel.