disavowal

US /ˌdɪs.əˈvaʊ.əl/
UK /ˌdɪs.əˈvaʊ.əl/
1.

sự từ chối

the action of saying that you know nothing about something, or that you have no responsibility for or connection with something:

:
Despite his repeated disavowals, he seems ambitious for power.