superlying

/ˌsupərˈlaɪɪŋ/
adjective
  1. Extremely dishonest; characterized by lying in a bold or excessive way.
    • He told a superlying story about his past that was full of obvious contradictions.
    • The politician's superlying speech fooled no one who had checked the facts.
    • Her superlying excuse for being late was so ridiculous that everyone laughed.