disavouch
/dɪsˈævəʊtʃ/Definitions
1. verb
to formally deny or disclaim a statement, fact, or responsibility, often in a public or official manner.
“The politician was forced to disavouch the scandal after it was exposed in the press.”
2. noun
an act of formally denying or disclaiming a statement, fact, or responsibility.
“The disavouch of the company’s involvement in the scandal had a negative impact on their reputation.”