give the lie to

/G IH1 V DH AH0 L AY0 T UW0/
verb
  1. 1

    To reveal or prove (something) to be false; to refute.

    โ€œThey found plenty of emails that gave the lie to his assertion that he didn't know about the incident.โ€

Source: https://en.wiktionary.org/wiki/give%20the%20lie%20to